<article>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#article09_10_19_1324222</id>
	<title>VASIMR Ion Engine Could Cut Mars Trip To 39 Days</title>
	<author>CmdrTaco</author>
	<datestamp>1255961520000</datestamp>
	<htmltext>An anonymous reader writes <i>"It would take <a href="http://www.canada.com/technology/rocket+engine+could+make+trips+Mars+realistic/2119300/story.html">about 39 days to reach Mars</a>, compared to six months by conventional rocket power. 'This engine is in fact going to be tested on the International Space Station, launched about 2013,' astronaut Chris Hadfield said. The  <a href="http://www.adastrarocket.com/VASIMR.html">Variable Specific Impulse Magnetoplasma Rocket</a> (VASIMR&#174;)  system encompasses three linked magnetic cells. The 'Plasma Source' cell involves the main injection of neutral gas (typically hydrogen, or other light gases) to be turned into plasma and the ionization subsystem. The 'RF Booster' cell acts as an amplifier to further energize the plasma to the desired temperature using electromagnetic waves. The 'Magnetic Nozzle' cell converts the energy of the plasma into directed motion and ultimately useful thrust."</i></htmltext>
<tokenext>An anonymous reader writes " It would take about 39 days to reach Mars , compared to six months by conventional rocket power .
'This engine is in fact going to be tested on the International Space Station , launched about 2013, ' astronaut Chris Hadfield said .
The Variable Specific Impulse Magnetoplasma Rocket ( VASIMR   ) system encompasses three linked magnetic cells .
The 'Plasma Source ' cell involves the main injection of neutral gas ( typically hydrogen , or other light gases ) to be turned into plasma and the ionization subsystem .
The 'RF Booster ' cell acts as an amplifier to further energize the plasma to the desired temperature using electromagnetic waves .
The 'Magnetic Nozzle ' cell converts the energy of the plasma into directed motion and ultimately useful thrust .
"</tokentext>
<sentencetext>An anonymous reader writes "It would take about 39 days to reach Mars, compared to six months by conventional rocket power.
'This engine is in fact going to be tested on the International Space Station, launched about 2013,' astronaut Chris Hadfield said.
The  Variable Specific Impulse Magnetoplasma Rocket (VASIMR®)  system encompasses three linked magnetic cells.
The 'Plasma Source' cell involves the main injection of neutral gas (typically hydrogen, or other light gases) to be turned into plasma and the ionization subsystem.
The 'RF Booster' cell acts as an amplifier to further energize the plasma to the desired temperature using electromagnetic waves.
The 'Magnetic Nozzle' cell converts the energy of the plasma into directed motion and ultimately useful thrust.
"</sentencetext>
</article>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29796279</id>
	<title>Re:great research, no let come down to earth</title>
	<author>Galestar</author>
	<datestamp>1255976160000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext>If we just "keep it simple", we'd just stay home.</htmltext>
<tokenext>If we just " keep it simple " , we 'd just stay home .</tokentext>
<sentencetext>If we just "keep it simple", we'd just stay home.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29795873</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29794543</id>
	<title>LCD vs Plasma</title>
	<author>Anonymous</author>
	<datestamp>1255968840000</datestamp>
	<modclass>None</modclass>
	<modscore>0</modscore>
	<htmltext>Take that, LCD pundits ! Could you fly to Mars on a Variable Specific Impulse Magneto<b>LCD</b> Rocket ?
No ! That requires the power of plasma ! Don't talk about contrast, color accuracy, response time or resolution : if you can stick it to a rocket is the only relevant criteria. And if it goes kaboom, it's ever better.</htmltext>
<tokenext>Take that , LCD pundits !
Could you fly to Mars on a Variable Specific Impulse MagnetoLCD Rocket ?
No !
That requires the power of plasma !
Do n't talk about contrast , color accuracy , response time or resolution : if you can stick it to a rocket is the only relevant criteria .
And if it goes kaboom , it 's ever better .</tokentext>
<sentencetext>Take that, LCD pundits !
Could you fly to Mars on a Variable Specific Impulse MagnetoLCD Rocket ?
No !
That requires the power of plasma !
Don't talk about contrast, color accuracy, response time or resolution : if you can stick it to a rocket is the only relevant criteria.
And if it goes kaboom, it's ever better.</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29794493</id>
	<title>Re:Please, please, PLEASE...</title>
	<author>Anonymous</author>
	<datestamp>1255968600000</datestamp>
	<modclass>None</modclass>
	<modscore>0</modscore>
	<htmltext><p>Also, instead of "Lift off,"  please say "FULL IMPULSE POWER!"</p></htmltext>
<tokenext>Also , instead of " Lift off , " please say " FULL IMPULSE POWER !
"</tokentext>
<sentencetext>Also, instead of "Lift off,"  please say "FULL IMPULSE POWER!
"</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29793839</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29801307</id>
	<title>Re:Exactly wrong!</title>
	<author>Nefarious Wheel</author>
	<datestamp>1255952640000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p><div class="quote"><p>How are you going to lift the ship? Space elevator?</p></div><p>Philosophically the same way a VASIMR rocket works -- not all at once, but little bits of it over a long period of time.  You assemble it in orbit.</p></div>
	</htmltext>
<tokenext>How are you going to lift the ship ?
Space elevator ? Philosophically the same way a VASIMR rocket works -- not all at once , but little bits of it over a long period of time .
You assemble it in orbit .</tokentext>
<sentencetext>How are you going to lift the ship?
Space elevator?Philosophically the same way a VASIMR rocket works -- not all at once, but little bits of it over a long period of time.
You assemble it in orbit.
	</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29794093</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29795625</id>
	<title>Don't let this one fade into obscurity</title>
	<author>prisoner-of-enigma</author>
	<datestamp>1255973400000</datestamp>
	<modclass>Insightful</modclass>
	<modscore>2</modscore>
	<htmltext><p>I for one am tired of hearing about all these wonderful propulsion ideas that inevitably fade into the background.  What is it going to take to get one of these damned things <b>built</b> and tested?</p><p>Yes, I know the trite answer is "money," but that's merely a means.  What we lack is <b>desire</b>.  I have a funny feeling that all the billions we've wasted on the ISS and keeping the nigh-useless Shuttle flying these past decades could've easily funded an unmanned test vehicle that could've used VASIMIR to fly to Mars and back as a technology demonstrator.</p><p>Let's quit <b>talking</b> about what this technology "could" do and actual <b>do it</b> for a change.  If it's feasible then we should be screaming at our Congress-critters to get behind it.</p></htmltext>
<tokenext>I for one am tired of hearing about all these wonderful propulsion ideas that inevitably fade into the background .
What is it going to take to get one of these damned things built and tested ? Yes , I know the trite answer is " money , " but that 's merely a means .
What we lack is desire .
I have a funny feeling that all the billions we 've wasted on the ISS and keeping the nigh-useless Shuttle flying these past decades could 've easily funded an unmanned test vehicle that could 've used VASIMIR to fly to Mars and back as a technology demonstrator.Let 's quit talking about what this technology " could " do and actual do it for a change .
If it 's feasible then we should be screaming at our Congress-critters to get behind it .</tokentext>
<sentencetext>I for one am tired of hearing about all these wonderful propulsion ideas that inevitably fade into the background.
What is it going to take to get one of these damned things built and tested?Yes, I know the trite answer is "money," but that's merely a means.
What we lack is desire.
I have a funny feeling that all the billions we've wasted on the ISS and keeping the nigh-useless Shuttle flying these past decades could've easily funded an unmanned test vehicle that could've used VASIMIR to fly to Mars and back as a technology demonstrator.Let's quit talking about what this technology "could" do and actual do it for a change.
If it's feasible then we should be screaming at our Congress-critters to get behind it.</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29797649</id>
	<title>Re:4 out of 5 astronauts surveyed</title>
	<author>elrous0</author>
	<datestamp>1255981260000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext>Except for one guy, who is apparently quite content with being locking in a small capsule in close quarters with several other men.</htmltext>
<tokenext>Except for one guy , who is apparently quite content with being locking in a small capsule in close quarters with several other men .</tokentext>
<sentencetext>Except for one guy, who is apparently quite content with being locking in a small capsule in close quarters with several other men.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29794405</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29795079</id>
	<title>Light speed probes</title>
	<author>GodfatherofSoul</author>
	<datestamp>1255971420000</datestamp>
	<modclass>Interestin</modclass>
	<modscore>2</modscore>
	<htmltext>I'd like to see a test probe fly just as fast as we can get it to go.  I'm sure it'll be pulverized by dust motes if you can get it moving fast enough, but it would be cool to see something we've created jetting about a some considerable fraction of light speed.  Maybe you can get to another star system in a human lifetime?</htmltext>
<tokenext>I 'd like to see a test probe fly just as fast as we can get it to go .
I 'm sure it 'll be pulverized by dust motes if you can get it moving fast enough , but it would be cool to see something we 've created jetting about a some considerable fraction of light speed .
Maybe you can get to another star system in a human lifetime ?</tokentext>
<sentencetext>I'd like to see a test probe fly just as fast as we can get it to go.
I'm sure it'll be pulverized by dust motes if you can get it moving fast enough, but it would be cool to see something we've created jetting about a some considerable fraction of light speed.
Maybe you can get to another star system in a human lifetime?</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29795439</id>
	<title>How did you get modded up?</title>
	<author>WindBourne</author>
	<datestamp>1255972680000</datestamp>
	<modclass>Interestin</modclass>
	<modscore>2</modscore>
	<htmltext>First, it is easy to send up lots of uranium into space.  It can be sent in capsules that can take any issue (heat, water, etc). BUT, the simple fact is, that the moon has been found to contain Uranium. And it appears to be a LOT. It should be possible to mine it and send it various places. While I was actually a fan of Mars first, now I back the moon due to the water and uranium. Combine that with an electric launcher and it should be possible to send missions at extremely fast rates through the solar system.</htmltext>
<tokenext>First , it is easy to send up lots of uranium into space .
It can be sent in capsules that can take any issue ( heat , water , etc ) .
BUT , the simple fact is , that the moon has been found to contain Uranium .
And it appears to be a LOT .
It should be possible to mine it and send it various places .
While I was actually a fan of Mars first , now I back the moon due to the water and uranium .
Combine that with an electric launcher and it should be possible to send missions at extremely fast rates through the solar system .</tokentext>
<sentencetext>First, it is easy to send up lots of uranium into space.
It can be sent in capsules that can take any issue (heat, water, etc).
BUT, the simple fact is, that the moon has been found to contain Uranium.
And it appears to be a LOT.
It should be possible to mine it and send it various places.
While I was actually a fan of Mars first, now I back the moon due to the water and uranium.
Combine that with an electric launcher and it should be possible to send missions at extremely fast rates through the solar system.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29793897</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29795827</id>
	<title>Re:CANADA ROCKS!!!! Woooh</title>
	<author>jafac</author>
	<datestamp>1255974120000</datestamp>
	<modclass>Funny</modclass>
	<modscore>2</modscore>
	<htmltext><p>I dunno.</p><p>If Freud were alive today, he'd have a field-day comparing launch vehicles (size, reliability, national ego, etc.) to penises.   I reckon especially with the new flesh-colored Ares upper-stage.</p><p>I know I do.</p></htmltext>
<tokenext>I dunno.If Freud were alive today , he 'd have a field-day comparing launch vehicles ( size , reliability , national ego , etc .
) to penises .
I reckon especially with the new flesh-colored Ares upper-stage.I know I do .</tokentext>
<sentencetext>I dunno.If Freud were alive today, he'd have a field-day comparing launch vehicles (size, reliability, national ego, etc.
) to penises.
I reckon especially with the new flesh-colored Ares upper-stage.I know I do.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29793901</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29794051</id>
	<title>Re:Can it be used for ISStation keeping?</title>
	<author>Anonymous</author>
	<datestamp>1255966680000</datestamp>
	<modclass>None</modclass>
	<modscore>0</modscore>
	<htmltext><p>I tend to doubt it. Ion drives have extremely low thrust. It's their efficency that makes them interesting. Everything I ever read considered them only practical outside both atmosphere and a planet's gravitational field. They really excel in interplanetary or even interstellar space. Keeping the ISS in orbit isn't hard it's having the will and the cash to do it. An ion drive would limit the number of trips if it would work but it would still take transporting it to the ISS and the weigh would be the same as a lot of fuel.</p></htmltext>
<tokenext>I tend to doubt it .
Ion drives have extremely low thrust .
It 's their efficency that makes them interesting .
Everything I ever read considered them only practical outside both atmosphere and a planet 's gravitational field .
They really excel in interplanetary or even interstellar space .
Keeping the ISS in orbit is n't hard it 's having the will and the cash to do it .
An ion drive would limit the number of trips if it would work but it would still take transporting it to the ISS and the weigh would be the same as a lot of fuel .</tokentext>
<sentencetext>I tend to doubt it.
Ion drives have extremely low thrust.
It's their efficency that makes them interesting.
Everything I ever read considered them only practical outside both atmosphere and a planet's gravitational field.
They really excel in interplanetary or even interstellar space.
Keeping the ISS in orbit isn't hard it's having the will and the cash to do it.
An ion drive would limit the number of trips if it would work but it would still take transporting it to the ISS and the weigh would be the same as a lot of fuel.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29793875</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29794177</id>
	<title>Re:Tag as SLASHVERTISEMENT</title>
	<author>Anonymous</author>
	<datestamp>1255967220000</datestamp>
	<modclass>Funny</modclass>
	<modscore>1</modscore>
	<htmltext><p>Since when do more powerful engines imply safer?</p></htmltext>
<tokenext>Since when do more powerful engines imply safer ?</tokentext>
<sentencetext>Since when do more powerful engines imply safer?</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29793803</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29798545</id>
	<title>Re:CANADA ROCKS!!!! Woooh</title>
	<author>Anonymous</author>
	<datestamp>1255984260000</datestamp>
	<modclass>None</modclass>
	<modscore>0</modscore>
	<htmltext><p><div class="quote"><p>Yeaaaaaaaaaaaaaaaaaahhhhhhh!</p><p>C'mon you Americans, it's not like you don't defend your national pride in space either!<nobr> <wbr></nobr>:-)</p></div><p>Well, come on man, it's not really so much "National Pride" as it is more like State Pride.</p><p>Ok, so we haven't gotten around to adding the 51st star to the flag yet.  But given the current economic climate you gotta admit that there are more important things that we could be spending tight budgets on instead of updating all the flags all over our collective country, right?</p><p>BTW, you new guys should remember to mark your calendars for July 4th... Remember, you're not supposed to go to work that day, eh?</p></div>
	</htmltext>
<tokenext>Yeaaaaaaaaaaaaaaaaaahhhhhhh ! C'mon you Americans , it 's not like you do n't defend your national pride in space either !
: - ) Well , come on man , it 's not really so much " National Pride " as it is more like State Pride.Ok , so we have n't gotten around to adding the 51st star to the flag yet .
But given the current economic climate you got ta admit that there are more important things that we could be spending tight budgets on instead of updating all the flags all over our collective country , right ? BTW , you new guys should remember to mark your calendars for July 4th... Remember , you 're not supposed to go to work that day , eh ?</tokentext>
<sentencetext>Yeaaaaaaaaaaaaaaaaaahhhhhhh!C'mon you Americans, it's not like you don't defend your national pride in space either!
:-)Well, come on man, it's not really so much "National Pride" as it is more like State Pride.Ok, so we haven't gotten around to adding the 51st star to the flag yet.
But given the current economic climate you gotta admit that there are more important things that we could be spending tight budgets on instead of updating all the flags all over our collective country, right?BTW, you new guys should remember to mark your calendars for July 4th... Remember, you're not supposed to go to work that day, eh?
	</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29793901</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29798755</id>
	<title>Re:4 out of 5 astronauts surveyed</title>
	<author>Anonymous</author>
	<datestamp>1255984920000</datestamp>
	<modclass>None</modclass>
	<modscore>0</modscore>
	<htmltext><p><div class="quote"><p>It would take about 39 days to reach Mars</p></div><p>Oh wait, they planned to have sex on Mars?</p></div>
	</htmltext>
<tokenext>It would take about 39 days to reach MarsOh wait , they planned to have sex on Mars ?</tokentext>
<sentencetext>It would take about 39 days to reach MarsOh wait, they planned to have sex on Mars?
	</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29794405</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29795119</id>
	<title>Re:Tag as SLASHVERTISEMENT</title>
	<author>avandesande</author>
	<datestamp>1255971540000</datestamp>
	<modclass>Interestin</modclass>
	<modscore>3</modscore>
	<htmltext><p>The logical thing to do would be to get the return vehicle in orbit around mars, ready to go before an astronaut leaves earth. This would be make reduce the number of errors that would put an astronaut into a life threatening situation (return failure).</p><p>A relatively small rocket could be used to get the astronaut off of Mars' surface. It won't take much with its lower gravity and thin atmosphere. We could even test all these scenarios remotely.</p></htmltext>
<tokenext>The logical thing to do would be to get the return vehicle in orbit around mars , ready to go before an astronaut leaves earth .
This would be make reduce the number of errors that would put an astronaut into a life threatening situation ( return failure ) .A relatively small rocket could be used to get the astronaut off of Mars ' surface .
It wo n't take much with its lower gravity and thin atmosphere .
We could even test all these scenarios remotely .</tokentext>
<sentencetext>The logical thing to do would be to get the return vehicle in orbit around mars, ready to go before an astronaut leaves earth.
This would be make reduce the number of errors that would put an astronaut into a life threatening situation (return failure).A relatively small rocket could be used to get the astronaut off of Mars' surface.
It won't take much with its lower gravity and thin atmosphere.
We could even test all these scenarios remotely.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29793803</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29794305</id>
	<title>Re:Please, please, PLEASE...</title>
	<author>confused one</author>
	<datestamp>1255967760000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext>Impulse engines have fusion reactors at their core, or so I read.  While VASIMR borrows technology from fusion research, You'd need to change the fuel used, change the shape of the magnetic confinement, and increase the energy input of a VASIMR engine many orders of magnitude, in order to reach that point.  So, a totally new design...</htmltext>
<tokenext>Impulse engines have fusion reactors at their core , or so I read .
While VASIMR borrows technology from fusion research , You 'd need to change the fuel used , change the shape of the magnetic confinement , and increase the energy input of a VASIMR engine many orders of magnitude , in order to reach that point .
So , a totally new design.. .</tokentext>
<sentencetext>Impulse engines have fusion reactors at their core, or so I read.
While VASIMR borrows technology from fusion research, You'd need to change the fuel used, change the shape of the magnetic confinement, and increase the energy input of a VASIMR engine many orders of magnitude, in order to reach that point.
So, a totally new design...</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29793839</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29796471</id>
	<title>Re:I'm dizzy.</title>
	<author>Anonymous</author>
	<datestamp>1255976820000</datestamp>
	<modclass>Informativ</modclass>
	<modscore>2</modscore>
	<htmltext><p>Another main reason for the length of time involved is the orbital dynamics of the positions of the two planets.  There is a astro concept called a Hohmann Transfer (http://en.wikipedia.org/wiki/Hohmann\_transfer\_orbit), which is a specific impulse efficient way of moving from one orbit to another.  But it takes time, and requires waiting until the bodies are in the right position before we do it.</p><p>So you end up having to hang around on Mars for several months.</p><p>Going just a -little- bit faster doesn't gain anything because then you just have to wait longer for the planets to align.</p><p>Since this proposes something vastly quicker, the comment in the article about being able to do it in one planetary pass is what makes the 89 days possible.  Requires tons more delta-V to do an orbital transfer this way, but the amount we'd save on human sustainment would more than make up for it.</p><p>Of course, not sure yet about hauling the nuke reactor into space...</p></htmltext>
<tokenext>Another main reason for the length of time involved is the orbital dynamics of the positions of the two planets .
There is a astro concept called a Hohmann Transfer ( http : //en.wikipedia.org/wiki/Hohmann \ _transfer \ _orbit ) , which is a specific impulse efficient way of moving from one orbit to another .
But it takes time , and requires waiting until the bodies are in the right position before we do it.So you end up having to hang around on Mars for several months.Going just a -little- bit faster does n't gain anything because then you just have to wait longer for the planets to align.Since this proposes something vastly quicker , the comment in the article about being able to do it in one planetary pass is what makes the 89 days possible .
Requires tons more delta-V to do an orbital transfer this way , but the amount we 'd save on human sustainment would more than make up for it.Of course , not sure yet about hauling the nuke reactor into space.. .</tokentext>
<sentencetext>Another main reason for the length of time involved is the orbital dynamics of the positions of the two planets.
There is a astro concept called a Hohmann Transfer (http://en.wikipedia.org/wiki/Hohmann\_transfer\_orbit), which is a specific impulse efficient way of moving from one orbit to another.
But it takes time, and requires waiting until the bodies are in the right position before we do it.So you end up having to hang around on Mars for several months.Going just a -little- bit faster doesn't gain anything because then you just have to wait longer for the planets to align.Since this proposes something vastly quicker, the comment in the article about being able to do it in one planetary pass is what makes the 89 days possible.
Requires tons more delta-V to do an orbital transfer this way, but the amount we'd save on human sustainment would more than make up for it.Of course, not sure yet about hauling the nuke reactor into space...</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29793791</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29793833</id>
	<title>Re:I'm dizzy.</title>
	<author>Michael\_gr</author>
	<datestamp>1255965840000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext>They will have to get back, won't they? 39 days one way, 39 days the other way, ~10 days on Mars.</htmltext>
<tokenext>They will have to get back , wo n't they ?
39 days one way , 39 days the other way , ~ 10 days on Mars .</tokentext>
<sentencetext>They will have to get back, won't they?
39 days one way, 39 days the other way, ~10 days on Mars.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29793791</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29795063</id>
	<title>Re:Tag as SLASHVERTISEMENT</title>
	<author>pixelpusher220</author>
	<datestamp>1255971300000</datestamp>
	<modclass>Insightful</modclass>
	<modscore>2</modscore>
	<htmltext>I believe the 'safer' idea is that instead of a 2 year round trip, we might be talking a few months.   Lots easier to get help when it's only 45 days away rather than 6-12 months.
<br> <br>
And yes, 'easy' in this case is still ridiculously hard...but still it's a good bit better than 2 years.</htmltext>
<tokenext>I believe the 'safer ' idea is that instead of a 2 year round trip , we might be talking a few months .
Lots easier to get help when it 's only 45 days away rather than 6-12 months .
And yes , 'easy ' in this case is still ridiculously hard...but still it 's a good bit better than 2 years .</tokentext>
<sentencetext>I believe the 'safer' idea is that instead of a 2 year round trip, we might be talking a few months.
Lots easier to get help when it's only 45 days away rather than 6-12 months.
And yes, 'easy' in this case is still ridiculously hard...but still it's a good bit better than 2 years.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29794177</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29794659</id>
	<title>Well that's just great...</title>
	<author>FrozenGeek</author>
	<datestamp>1255969380000</datestamp>
	<modclass>Troll</modclass>
	<modscore>0</modscore>
	<htmltext>A motor that runs on hydrogen - a non-renewable resource.  How long will it be before we run out of hydrogen????</htmltext>
<tokenext>A motor that runs on hydrogen - a non-renewable resource .
How long will it be before we run out of hydrogen ? ? ?
?</tokentext>
<sentencetext>A motor that runs on hydrogen - a non-renewable resource.
How long will it be before we run out of hydrogen???
?</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29795077</id>
	<title>Re:Can it be used for ISStation keeping?</title>
	<author>Tekfactory</author>
	<datestamp>1255971360000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p>With trickle charge batteries the VASIMR will be fired for 10 minutes at a time. The Drive will be using 200 kW which is more than the ISS Solar Array can produce continuously.</p><p>According to papers from AdAstra the engine is supposed to deliver 5 Newtons using Argon as a fuel.</p><p>The 200 kW tests were important because they meant the engine could sucessfully lift the ISS. The previous motor which used 100 kW coud only create 1 Newton of thrust.</p></htmltext>
<tokenext>With trickle charge batteries the VASIMR will be fired for 10 minutes at a time .
The Drive will be using 200 kW which is more than the ISS Solar Array can produce continuously.According to papers from AdAstra the engine is supposed to deliver 5 Newtons using Argon as a fuel.The 200 kW tests were important because they meant the engine could sucessfully lift the ISS .
The previous motor which used 100 kW coud only create 1 Newton of thrust .</tokentext>
<sentencetext>With trickle charge batteries the VASIMR will be fired for 10 minutes at a time.
The Drive will be using 200 kW which is more than the ISS Solar Array can produce continuously.According to papers from AdAstra the engine is supposed to deliver 5 Newtons using Argon as a fuel.The 200 kW tests were important because they meant the engine could sucessfully lift the ISS.
The previous motor which used 100 kW coud only create 1 Newton of thrust.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29793875</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29794013</id>
	<title>Primary power source?</title>
	<author>JSBiff</author>
	<datestamp>1255966560000</datestamp>
	<modclass>Interestin</modclass>
	<modscore>1</modscore>
	<htmltext><p>So, it appears that the VASIMR page shows a diagram where an external power source is applied to the engine (I presume in the form of electricity). Are there any electrical generators currently in existence which would be suitably compact and low enough mass, while at the same time generating sufficient power, to actually power this thing (basic physics tells me that no matter what propulsion method you use, energy is energy, and it takes a LOT of energy to generate large accellerations)? Or is this engine gonna have to sit on the shelf after being developed, while we figure out how to power it?</p><p>I suspect this thing would need some sort of small/light power generator that can produce a GW or more of power. So, do we need to first perfect fusion power before we can actually use this engine?</p></htmltext>
<tokenext>So , it appears that the VASIMR page shows a diagram where an external power source is applied to the engine ( I presume in the form of electricity ) .
Are there any electrical generators currently in existence which would be suitably compact and low enough mass , while at the same time generating sufficient power , to actually power this thing ( basic physics tells me that no matter what propulsion method you use , energy is energy , and it takes a LOT of energy to generate large accellerations ) ?
Or is this engine gon na have to sit on the shelf after being developed , while we figure out how to power it ? I suspect this thing would need some sort of small/light power generator that can produce a GW or more of power .
So , do we need to first perfect fusion power before we can actually use this engine ?</tokentext>
<sentencetext>So, it appears that the VASIMR page shows a diagram where an external power source is applied to the engine (I presume in the form of electricity).
Are there any electrical generators currently in existence which would be suitably compact and low enough mass, while at the same time generating sufficient power, to actually power this thing (basic physics tells me that no matter what propulsion method you use, energy is energy, and it takes a LOT of energy to generate large accellerations)?
Or is this engine gonna have to sit on the shelf after being developed, while we figure out how to power it?I suspect this thing would need some sort of small/light power generator that can produce a GW or more of power.
So, do we need to first perfect fusion power before we can actually use this engine?</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29795661</id>
	<title>Oy...</title>
	<author>xx01dk</author>
	<datestamp>1255973580000</datestamp>
	<modclass>Funny</modclass>
	<modscore>3</modscore>
	<htmltext>VASIMR.
<br>
<br>
<br>
<br>
<br>
<br><nobr> <wbr></nobr>...what.</htmltext>
<tokenext>VASIMR .
...what .</tokentext>
<sentencetext>VASIMR.
...what.</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29793697</id>
	<title>Billions and billions...</title>
	<author>GenP</author>
	<datestamp>1255965240000</datestamp>
	<modclass>Funny</modclass>
	<modscore>5</modscore>
	<htmltext>A few hundred Newtons here, a few hundred Newtons there, and pretty soon you're talking about some real delta-v!</htmltext>
<tokenext>A few hundred Newtons here , a few hundred Newtons there , and pretty soon you 're talking about some real delta-v !</tokentext>
<sentencetext>A few hundred Newtons here, a few hundred Newtons there, and pretty soon you're talking about some real delta-v!</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29799627</id>
	<title>Ready to Colonize!</title>
	<author>Anonymous</author>
	<datestamp>1255944780000</datestamp>
	<modclass>Interestin</modclass>
	<modscore>1</modscore>
	<htmltext><p>39 days!<br>Colonization is very doable with only a month...the Europeans took longer to get to N. America by sail (or Polynesians going east to Hawaii).<br>Fast enough that it may be possible to go out even on non-ideal planetary alignments.<br>One could send out plants and basing stuff right off the bat and follow with ship 2 with supplies and more permanent base-making stuff.<br>One could also set up a base in Mars orbit to refuel multiple ships to mine asteroids<nobr> <wbr></nobr>:0)</p></htmltext>
<tokenext>39 days ! Colonization is very doable with only a month...the Europeans took longer to get to N. America by sail ( or Polynesians going east to Hawaii ) .Fast enough that it may be possible to go out even on non-ideal planetary alignments.One could send out plants and basing stuff right off the bat and follow with ship 2 with supplies and more permanent base-making stuff.One could also set up a base in Mars orbit to refuel multiple ships to mine asteroids : 0 )</tokentext>
<sentencetext>39 days!Colonization is very doable with only a month...the Europeans took longer to get to N. America by sail (or Polynesians going east to Hawaii).Fast enough that it may be possible to go out even on non-ideal planetary alignments.One could send out plants and basing stuff right off the bat and follow with ship 2 with supplies and more permanent base-making stuff.One could also set up a base in Mars orbit to refuel multiple ships to mine asteroids :0)</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29795851</id>
	<title>Re:I'm dizzy.</title>
	<author>2short</author>
	<datestamp>1255974180000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><br>"In three paragraphs we go from 89 days to 39 days. So which is it?"<br><br>Either estimate is based on using a non-existant upscaling of an engine whose much smaller proto-type is scheduled for testing maybe 4 year from now.  An of course, attaching that engine to an entirely unspecified payload. So really, who cares if it's 89 or 39?  Anyone making such a specific estimate at this point is making stuff up, almost certainly to push some agenda.</htmltext>
<tokenext>" In three paragraphs we go from 89 days to 39 days .
So which is it ?
" Either estimate is based on using a non-existant upscaling of an engine whose much smaller proto-type is scheduled for testing maybe 4 year from now .
An of course , attaching that engine to an entirely unspecified payload .
So really , who cares if it 's 89 or 39 ?
Anyone making such a specific estimate at this point is making stuff up , almost certainly to push some agenda .</tokentext>
<sentencetext>"In three paragraphs we go from 89 days to 39 days.
So which is it?
"Either estimate is based on using a non-existant upscaling of an engine whose much smaller proto-type is scheduled for testing maybe 4 year from now.
An of course, attaching that engine to an entirely unspecified payload.
So really, who cares if it's 89 or 39?
Anyone making such a specific estimate at this point is making stuff up, almost certainly to push some agenda.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29793791</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29802825</id>
	<title>Re:CANADA ROCKS!!!! Woooh</title>
	<author>tsotha</author>
	<datestamp>1255961820000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext>You guys should be very proud of your arm on the ISS.  Seems to be the most useful bit on the whole thing.</htmltext>
<tokenext>You guys should be very proud of your arm on the ISS .
Seems to be the most useful bit on the whole thing .</tokentext>
<sentencetext>You guys should be very proud of your arm on the ISS.
Seems to be the most useful bit on the whole thing.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29793901</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29793939</id>
	<title>Re:Please, please, PLEASE...</title>
	<author>John Hasler</author>
	<datestamp>1255966320000</datestamp>
	<modclass>Interestin</modclass>
	<modscore>2</modscore>
	<htmltext><p>All rockets are "impulse engines".</p></htmltext>
<tokenext>All rockets are " impulse engines " .</tokentext>
<sentencetext>All rockets are "impulse engines".</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29793839</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29797573</id>
	<title>Re:CANADA ROCKS!!!! Woooh</title>
	<author>Blakey Rat</author>
	<datestamp>1255980900000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p>Canada has one of the main pieces of hardware? You mean this engine runs on moosehide!?</p></htmltext>
<tokenext>Canada has one of the main pieces of hardware ?
You mean this engine runs on moosehide !
?</tokentext>
<sentencetext>Canada has one of the main pieces of hardware?
You mean this engine runs on moosehide!
?</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29793901</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29796033</id>
	<title>Slight Problem</title>
	<author>maroberts</author>
	<datestamp>1255975020000</datestamp>
	<modclass>Informativ</modclass>
	<modscore>2</modscore>
	<htmltext>Gravity wells.

As has been mentioned before, ION engines are great for long distance travel. The only problem is getting down and up from Mars or any other planet you decide to visit, where you're back to needing a big rocket for the high thrust needed. So you can get your astronauts in orbit round Mars, but the problem is how to get them down and up from the surface?</htmltext>
<tokenext>Gravity wells .
As has been mentioned before , ION engines are great for long distance travel .
The only problem is getting down and up from Mars or any other planet you decide to visit , where you 're back to needing a big rocket for the high thrust needed .
So you can get your astronauts in orbit round Mars , but the problem is how to get them down and up from the surface ?</tokentext>
<sentencetext>Gravity wells.
As has been mentioned before, ION engines are great for long distance travel.
The only problem is getting down and up from Mars or any other planet you decide to visit, where you're back to needing a big rocket for the high thrust needed.
So you can get your astronauts in orbit round Mars, but the problem is how to get them down and up from the surface?</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29799419</id>
	<title>What are our priorities?</title>
	<author>bodhisattva</author>
	<datestamp>1255944000000</datestamp>
	<modclass>Flamebait</modclass>
	<modscore>-1</modscore>
	<htmltext><p>A million children a day die from diseases related to a lack of safe water. Can we engineers design cheap, maintainable safe water systems? Tell me Vasimir is worth the life of one child.</p></htmltext>
<tokenext>A million children a day die from diseases related to a lack of safe water .
Can we engineers design cheap , maintainable safe water systems ?
Tell me Vasimir is worth the life of one child .</tokentext>
<sentencetext>A million children a day die from diseases related to a lack of safe water.
Can we engineers design cheap, maintainable safe water systems?
Tell me Vasimir is worth the life of one child.</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29794383</id>
	<title>Re:Primary power source?</title>
	<author>confused one</author>
	<datestamp>1255968180000</datestamp>
	<modclass>Informativ</modclass>
	<modscore>3</modscore>
	<htmltext>They usually discuss using it with solar arrays for near Earth use and with nuclear reactors on the order of 10-100MW for Mars and outer solar system.</htmltext>
<tokenext>They usually discuss using it with solar arrays for near Earth use and with nuclear reactors on the order of 10-100MW for Mars and outer solar system .</tokentext>
<sentencetext>They usually discuss using it with solar arrays for near Earth use and with nuclear reactors on the order of 10-100MW for Mars and outer solar system.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29794013</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29794725</id>
	<title>Re:Tag as SLASHVERTISEMENT</title>
	<author>scorp1us</author>
	<datestamp>1255969740000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p>I would change my name to Philip Fry if I was selected for the mission.</p></htmltext>
<tokenext>I would change my name to Philip Fry if I was selected for the mission .</tokentext>
<sentencetext>I would change my name to Philip Fry if I was selected for the mission.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29793803</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29796209</id>
	<title>Canadian Space Agency</title>
	<author>stoob0</author>
	<datestamp>1255975920000</datestamp>
	<modclass>Funny</modclass>
	<modscore>2</modscore>
	<htmltext>Do all Canadian astronauts launch with mittens close at hand?  Does the other pocket visible in the picture contain pucks?</htmltext>
<tokenext>Do all Canadian astronauts launch with mittens close at hand ?
Does the other pocket visible in the picture contain pucks ?</tokentext>
<sentencetext>Do all Canadian astronauts launch with mittens close at hand?
Does the other pocket visible in the picture contain pucks?</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29806953</id>
	<title>Re:Don't let this one fade into obscurity</title>
	<author>mcvos</author>
	<datestamp>1256049240000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p><div class="quote"><p>I for one am tired of hearing about all these wonderful propulsion ideas that inevitably fade into the background.  What is it going to take to get one of these damned things <b>built</b> and tested?</p></div><p>Aren't other ion engines already being used?</p></div>
	</htmltext>
<tokenext>I for one am tired of hearing about all these wonderful propulsion ideas that inevitably fade into the background .
What is it going to take to get one of these damned things built and tested ? Are n't other ion engines already being used ?</tokentext>
<sentencetext>I for one am tired of hearing about all these wonderful propulsion ideas that inevitably fade into the background.
What is it going to take to get one of these damned things built and tested?Aren't other ion engines already being used?
	</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29795625</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29794205</id>
	<title>Re:I'm dizzy.</title>
	<author>MoobY</author>
	<datestamp>1255967340000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p>You're confusing going one-way and the whole trip. Go to Mars = 39 days, stay at mars = 10 days, come back to earth = 39 days, total = about 3 months.</p></htmltext>
<tokenext>You 're confusing going one-way and the whole trip .
Go to Mars = 39 days , stay at mars = 10 days , come back to earth = 39 days , total = about 3 months .</tokentext>
<sentencetext>You're confusing going one-way and the whole trip.
Go to Mars = 39 days, stay at mars = 10 days, come back to earth = 39 days, total = about 3 months.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29793791</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29794405</id>
	<title>4 out of 5 astronauts surveyed</title>
	<author>bl8n8r</author>
	<datestamp>1255968240000</datestamp>
	<modclass>Funny</modclass>
	<modscore>5</modscore>
	<htmltext>preferred 39 days of abstinence to 6 months!</htmltext>
<tokenext>preferred 39 days of abstinence to 6 months !</tokentext>
<sentencetext>preferred 39 days of abstinence to 6 months!</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29795117</id>
	<title>Re:I'm dizzy.</title>
	<author>JWSmythe</author>
	<datestamp>1255971540000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p>
&nbsp; &nbsp; Are your numbers off on the excuse too?  You averaged 33.34mph?  A 800 mile highway trip should be easily accomplished in 13.3 hours, considering 3 fuel stops.  If it was 400 miles each way, that wasn't the best plan, to drive 6 hours to spend 12, and turn right around.  Always leave relaxation time at your destinations.<nobr> <wbr></nobr>:)</p></htmltext>
<tokenext>    Are your numbers off on the excuse too ?
You averaged 33.34mph ?
A 800 mile highway trip should be easily accomplished in 13.3 hours , considering 3 fuel stops .
If it was 400 miles each way , that was n't the best plan , to drive 6 hours to spend 12 , and turn right around .
Always leave relaxation time at your destinations .
: )</tokentext>
<sentencetext>
    Are your numbers off on the excuse too?
You averaged 33.34mph?
A 800 mile highway trip should be easily accomplished in 13.3 hours, considering 3 fuel stops.
If it was 400 miles each way, that wasn't the best plan, to drive 6 hours to spend 12, and turn right around.
Always leave relaxation time at your destinations.
:)</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29793883</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29794855</id>
	<title>Newsflash</title>
	<author>Dunbal</author>
	<datestamp>1255970280000</datestamp>
	<modclass>Insightful</modclass>
	<modscore>2</modscore>
	<htmltext><p>Engine that hasn't really been invented yet might rhubarb rhubarb rhubarb rhubarb....</p><p>
&nbsp; &nbsp; &nbsp; Of course as a nationalized Costa Rican citizen, perhaps I should celebrate the fact that <a href="http://en.wikipedia.org/wiki/Franklin\_Chang-Diaz" title="wikipedia.org">Franklin Chang Diaz is the creator of this engine, however let's wait and see until it has actually been tested before we make specific claims, yes?</a> [wikipedia.org]</p></htmltext>
<tokenext>Engine that has n't really been invented yet might rhubarb rhubarb rhubarb rhubarb... .       Of course as a nationalized Costa Rican citizen , perhaps I should celebrate the fact that Franklin Chang Diaz is the creator of this engine , however let 's wait and see until it has actually been tested before we make specific claims , yes ?
[ wikipedia.org ]</tokentext>
<sentencetext>Engine that hasn't really been invented yet might rhubarb rhubarb rhubarb rhubarb....
      Of course as a nationalized Costa Rican citizen, perhaps I should celebrate the fact that Franklin Chang Diaz is the creator of this engine, however let's wait and see until it has actually been tested before we make specific claims, yes?
[wikipedia.org]</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29794087</id>
	<title>Re:I'm dizzy.</title>
	<author>DoofusOfDeath</author>
	<datestamp>1255966860000</datestamp>
	<modclass>Funny</modclass>
	<modscore>2</modscore>
	<htmltext><blockquote><div><p>In three paragraphs we go from 89 days to 39 days.</p></div></blockquote><p>It's called <i>acceleration</i>.  Duh...</p></div>
	</htmltext>
<tokenext>In three paragraphs we go from 89 days to 39 days.It 's called acceleration .
Duh.. .</tokentext>
<sentencetext>In three paragraphs we go from 89 days to 39 days.It's called acceleration.
Duh...
	</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29793791</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29797169</id>
	<title>Re:CANADA ROCKS!!!! Woooh</title>
	<author>Arthur Grumbine</author>
	<datestamp>1255979220000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p><div class="quote"><p>True, but then Canada isn't a real country either!  <i>(ducks!)</i> </p></div><p>Perhaps <i>(Geese!)</i> would have been more appropriate?</p></div>
	</htmltext>
<tokenext>True , but then Canada is n't a real country either !
( ducks ! ) Perhaps ( Geese !
) would have been more appropriate ?</tokentext>
<sentencetext>True, but then Canada isn't a real country either!
(ducks!) Perhaps (Geese!
) would have been more appropriate?
	</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29794323</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29795107</id>
	<title>Edge of the Solar System?</title>
	<author>XFire35</author>
	<datestamp>1255971540000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext>So does that mean that we could venture to the edge of the solar system in under two years? (Two years comes form a guestimate from wikipedia image)</htmltext>
<tokenext>So does that mean that we could venture to the edge of the solar system in under two years ?
( Two years comes form a guestimate from wikipedia image )</tokentext>
<sentencetext>So does that mean that we could venture to the edge of the solar system in under two years?
(Two years comes form a guestimate from wikipedia image)</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29803907</id>
	<title>Re:Billions and billions...</title>
	<author>ELProphet</author>
	<datestamp>1255970940000</datestamp>
	<modclass>Funny</modclass>
	<modscore>3</modscore>
	<htmltext><p>Let's run the math:</p><p>(Using classical mechanics, Google Calculator, and some rounding)<br>40 days, 60 million km to mars at closest approach.<br>Spend half the time accelerating, half the time decelerating.</p><p>For acceleration:<br>x = x0 + v0t + (at^2)/2<br>2 * 30 million km / (20 days) ^ 2 = 2e-2m/s^2</p><p>Let's use a Space Shuttle, 2,029,203 kg<br>The force of the engine is<br>F = ma = ((2 029 203 kg) * 2 * (30 million km)) / ((20 days)^2) = 40 774.5587 newtons<br>Work along a straight line is Force time distance<br>W = Fd = (40 774.5587 newtons) * 30 million kilometers = 1.22323676 &#215; 10^15 joules<br>Power is work over time<br>P = W/t = 1.22323676 &#215; ((10^15) joules)) / (20 days) = 0.707891644 gigawatts<br>Of course, we need to do this twice:<br>Ptotal = 2P = 2 * 0.707891644 gigawatts = 1.41578329 gigawatts</p><p>Which is surprisingly close to the power needed to propel a DeLorean through time...</p><p>Note that this is only the power needed to get the ship to Mars and then stop it; I have no idea the efficiency of their engine, life support, etc, but hey, the math works close enough for me.</p><p>I'm a little weak on my power generation math- anyone who knows something about solar panels and PV arrays want to take a shot at the power requirements?</p></htmltext>
<tokenext>Let 's run the math : ( Using classical mechanics , Google Calculator , and some rounding ) 40 days , 60 million km to mars at closest approach.Spend half the time accelerating , half the time decelerating.For acceleration : x = x0 + v0t + ( at ^ 2 ) /22 * 30 million km / ( 20 days ) ^ 2 = 2e-2m/s ^ 2Let 's use a Space Shuttle , 2,029,203 kgThe force of the engine isF = ma = ( ( 2 029 203 kg ) * 2 * ( 30 million km ) ) / ( ( 20 days ) ^ 2 ) = 40 774.5587 newtonsWork along a straight line is Force time distanceW = Fd = ( 40 774.5587 newtons ) * 30 million kilometers = 1.22323676   10 ^ 15 joulesPower is work over timeP = W/t = 1.22323676   ( ( 10 ^ 15 ) joules ) ) / ( 20 days ) = 0.707891644 gigawattsOf course , we need to do this twice : Ptotal = 2P = 2 * 0.707891644 gigawatts = 1.41578329 gigawattsWhich is surprisingly close to the power needed to propel a DeLorean through time...Note that this is only the power needed to get the ship to Mars and then stop it ; I have no idea the efficiency of their engine , life support , etc , but hey , the math works close enough for me.I 'm a little weak on my power generation math- anyone who knows something about solar panels and PV arrays want to take a shot at the power requirements ?</tokentext>
<sentencetext>Let's run the math:(Using classical mechanics, Google Calculator, and some rounding)40 days, 60 million km to mars at closest approach.Spend half the time accelerating, half the time decelerating.For acceleration:x = x0 + v0t + (at^2)/22 * 30 million km / (20 days) ^ 2 = 2e-2m/s^2Let's use a Space Shuttle, 2,029,203 kgThe force of the engine isF = ma = ((2 029 203 kg) * 2 * (30 million km)) / ((20 days)^2) = 40 774.5587 newtonsWork along a straight line is Force time distanceW = Fd = (40 774.5587 newtons) * 30 million kilometers = 1.22323676 × 10^15 joulesPower is work over timeP = W/t = 1.22323676 × ((10^15) joules)) / (20 days) = 0.707891644 gigawattsOf course, we need to do this twice:Ptotal = 2P = 2 * 0.707891644 gigawatts = 1.41578329 gigawattsWhich is surprisingly close to the power needed to propel a DeLorean through time...Note that this is only the power needed to get the ship to Mars and then stop it; I have no idea the efficiency of their engine, life support, etc, but hey, the math works close enough for me.I'm a little weak on my power generation math- anyone who knows something about solar panels and PV arrays want to take a shot at the power requirements?</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29793697</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29795873</id>
	<title>great research, no let come down to earth</title>
	<author>Anonymous</author>
	<datestamp>1255974300000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext>Ion engines are worth nothing if you can't get from Earth (the GROUND) to space efficiently and effectively.
<br>
<br>
And a bunch of Aries rockets isn't going to cut it.
<br>
<br>
We have a dream (<i>Just</i> to goto space), why do we need to have more dreams (Mars)? Why can't we keep the problem simple?</htmltext>
<tokenext>Ion engines are worth nothing if you ca n't get from Earth ( the GROUND ) to space efficiently and effectively .
And a bunch of Aries rockets is n't going to cut it .
We have a dream ( Just to goto space ) , why do we need to have more dreams ( Mars ) ?
Why ca n't we keep the problem simple ?</tokentext>
<sentencetext>Ion engines are worth nothing if you can't get from Earth (the GROUND) to space efficiently and effectively.
And a bunch of Aries rockets isn't going to cut it.
We have a dream (Just to goto space), why do we need to have more dreams (Mars)?
Why can't we keep the problem simple?</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29794015</id>
	<title>made in Webster, TX</title>
	<author>boristdog</author>
	<datestamp>1255966560000</datestamp>
	<modclass>Funny</modclass>
	<modscore>2</modscore>
	<htmltext><p>Hooray!  Now maybe Webster, TX will be know for something other than being a speed trap between NASA and I-45.</p></htmltext>
<tokenext>Hooray !
Now maybe Webster , TX will be know for something other than being a speed trap between NASA and I-45 .</tokentext>
<sentencetext>Hooray!
Now maybe Webster, TX will be know for something other than being a speed trap between NASA and I-45.</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29798761</id>
	<title>This was an Israeli invention.</title>
	<author>RiddleyWalker</author>
	<datestamp>1255984980000</datestamp>
	<modclass>None</modclass>
	<modscore>0</modscore>
	<htmltext>Israel has been working on the Oy Vasimir engine for some time.  Gevult.</htmltext>
<tokenext>Israel has been working on the Oy Vasimir engine for some time .
Gevult .</tokentext>
<sentencetext>Israel has been working on the Oy Vasimir engine for some time.
Gevult.</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29793803</id>
	<title>Re:Tag as SLASHVERTISEMENT</title>
	<author>dkleinsc</author>
	<datestamp>1255965720000</datestamp>
	<modclass>Interestin</modclass>
	<modscore>5</modscore>
	<htmltext><p>Yeah, coverage like this really makes we want to go out and buy one for my own space ship.</p><p>Seriously, I think this might be getting coverage because this is potentially technology that could make a manned mission to MARS much more feasible and safer. Of course, getting back might still be challenging, but I for one would take the honor of being the first man on Mars away from Philip Fry if I could.</p></htmltext>
<tokenext>Yeah , coverage like this really makes we want to go out and buy one for my own space ship.Seriously , I think this might be getting coverage because this is potentially technology that could make a manned mission to MARS much more feasible and safer .
Of course , getting back might still be challenging , but I for one would take the honor of being the first man on Mars away from Philip Fry if I could .</tokentext>
<sentencetext>Yeah, coverage like this really makes we want to go out and buy one for my own space ship.Seriously, I think this might be getting coverage because this is potentially technology that could make a manned mission to MARS much more feasible and safer.
Of course, getting back might still be challenging, but I for one would take the honor of being the first man on Mars away from Philip Fry if I could.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29793705</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29796965</id>
	<title>return is faster possibly?</title>
	<author>hydromike2</author>
	<datestamp>1255978620000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p>im not claiming to have RTA but depending on how fast they are going couldnt they just orbit mars while sending a smaller craft down to the planet and already be at the speed they were at when they came to mars and not need to accelerate as much? Or for that matter, get the craft started going in orbit remotely around the earth, then send the crew up and be on their way?</p></htmltext>
<tokenext>im not claiming to have RTA but depending on how fast they are going couldnt they just orbit mars while sending a smaller craft down to the planet and already be at the speed they were at when they came to mars and not need to accelerate as much ?
Or for that matter , get the craft started going in orbit remotely around the earth , then send the crew up and be on their way ?</tokentext>
<sentencetext>im not claiming to have RTA but depending on how fast they are going couldnt they just orbit mars while sending a smaller craft down to the planet and already be at the speed they were at when they came to mars and not need to accelerate as much?
Or for that matter, get the craft started going in orbit remotely around the earth, then send the crew up and be on their way?</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29795485</id>
	<title>Re:4 out of 5 astronauts surveyed</title>
	<author>Anonymous</author>
	<datestamp>1255972800000</datestamp>
	<modclass>Funny</modclass>
	<modscore>1</modscore>
	<htmltext><p>39 days is one way... your post implies a gigantic interplanetary orgy once they arrive on mars<br>maybe they should aim for phobos</p></htmltext>
<tokenext>39 days is one way... your post implies a gigantic interplanetary orgy once they arrive on marsmaybe they should aim for phobos</tokentext>
<sentencetext>39 days is one way... your post implies a gigantic interplanetary orgy once they arrive on marsmaybe they should aim for phobos</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29794405</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29823209</id>
	<title>Re:4 out of 5 astronauts surveyed</title>
	<author>Anonymous</author>
	<datestamp>1256138820000</datestamp>
	<modclass>None</modclass>
	<modscore>0</modscore>
	<htmltext><p>And getting away from annoying coworkers: <a href="http://www.adultswim.com/video/?episodeID=811921500d008062a1393136f40bb720" title="adultswim.com" rel="nofollow">Mission to Mars: Day 312</a> [adultswim.com]</p></htmltext>
<tokenext>And getting away from annoying coworkers : Mission to Mars : Day 312 [ adultswim.com ]</tokentext>
<sentencetext>And getting away from annoying coworkers: Mission to Mars: Day 312 [adultswim.com]</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29794405</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29794339</id>
	<title>Re:Tag as SLASHVERTISEMENT</title>
	<author>cpaalman</author>
	<datestamp>1255967880000</datestamp>
	<modclass>Offtopic</modclass>
	<modscore>-1</modscore>
	<htmltext>And after Mars, it's off to Uranus.  Soon to be renamed to Urectum.</htmltext>
<tokenext>And after Mars , it 's off to Uranus .
Soon to be renamed to Urectum .</tokentext>
<sentencetext>And after Mars, it's off to Uranus.
Soon to be renamed to Urectum.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29793803</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29794853</id>
	<title>Re:Needs serious power input for fast travel</title>
	<author>joh</author>
	<datestamp>1255970280000</datestamp>
	<modclass>Flamebait</modclass>
	<modscore>-1</modscore>
	<htmltext><p>I'm pretty sure that with the demonstrated launch failure rate of rockets there will be more than just the eco-hippies getting up. And while you may care or not, those in a position to actually decide and take the responsibility very much shy away from such things.</p><p>Besides, large-scale nuclear power in space is in no way off-the-shelf technology. And if you have to pour lots of money into that, using that money for developing lightweight solar technology and going the solar-electric route is not only safer, it can also much easier be scaled up and down and be used for other useful things (like probes and solar power satellites or communication satellites) while your MW reactor in space would never be much more than a very expensive one-off stunt without any long-term consequences for spaceflight. The ability to deploy large, mass-produced, lightweight solar panels may make a difference for both large and small projects, though. And it's a general engineering effort with lots of companies having good expertise in it. There is a *market* for such technology. Pushing the state of the art here is useful, there's money in it.</p><p>Nuclear power in space is very much a dead end. You don't need to be an eco-hippy to see that. People don't like it, politicians and managers don't like to take the responsibility, you can't make money from it, it gives no spin-offs, you'll never have private companies involved: it's a single-purpose, money wasting government exercise. SF from the past, not more.</p></htmltext>
<tokenext>I 'm pretty sure that with the demonstrated launch failure rate of rockets there will be more than just the eco-hippies getting up .
And while you may care or not , those in a position to actually decide and take the responsibility very much shy away from such things.Besides , large-scale nuclear power in space is in no way off-the-shelf technology .
And if you have to pour lots of money into that , using that money for developing lightweight solar technology and going the solar-electric route is not only safer , it can also much easier be scaled up and down and be used for other useful things ( like probes and solar power satellites or communication satellites ) while your MW reactor in space would never be much more than a very expensive one-off stunt without any long-term consequences for spaceflight .
The ability to deploy large , mass-produced , lightweight solar panels may make a difference for both large and small projects , though .
And it 's a general engineering effort with lots of companies having good expertise in it .
There is a * market * for such technology .
Pushing the state of the art here is useful , there 's money in it.Nuclear power in space is very much a dead end .
You do n't need to be an eco-hippy to see that .
People do n't like it , politicians and managers do n't like to take the responsibility , you ca n't make money from it , it gives no spin-offs , you 'll never have private companies involved : it 's a single-purpose , money wasting government exercise .
SF from the past , not more .</tokentext>
<sentencetext>I'm pretty sure that with the demonstrated launch failure rate of rockets there will be more than just the eco-hippies getting up.
And while you may care or not, those in a position to actually decide and take the responsibility very much shy away from such things.Besides, large-scale nuclear power in space is in no way off-the-shelf technology.
And if you have to pour lots of money into that, using that money for developing lightweight solar technology and going the solar-electric route is not only safer, it can also much easier be scaled up and down and be used for other useful things (like probes and solar power satellites or communication satellites) while your MW reactor in space would never be much more than a very expensive one-off stunt without any long-term consequences for spaceflight.
The ability to deploy large, mass-produced, lightweight solar panels may make a difference for both large and small projects, though.
And it's a general engineering effort with lots of companies having good expertise in it.
There is a *market* for such technology.
Pushing the state of the art here is useful, there's money in it.Nuclear power in space is very much a dead end.
You don't need to be an eco-hippy to see that.
People don't like it, politicians and managers don't like to take the responsibility, you can't make money from it, it gives no spin-offs, you'll never have private companies involved: it's a single-purpose, money wasting government exercise.
SF from the past, not more.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29793897</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29793733</id>
	<title>No quite yet.</title>
	<author>Anonymous</author>
	<datestamp>1255965480000</datestamp>
	<modclass>Informativ</modclass>
	<modscore>2</modscore>
	<htmltext><p>No stated in this article.</p><p>But I'm pretty sure the engine discussed will need to be roughly 100x more powerful to make that 39 day trip a reality.</p></htmltext>
<tokenext>No stated in this article.But I 'm pretty sure the engine discussed will need to be roughly 100x more powerful to make that 39 day trip a reality .</tokentext>
<sentencetext>No stated in this article.But I'm pretty sure the engine discussed will need to be roughly 100x more powerful to make that 39 day trip a reality.</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29794085</id>
	<title>Well</title>
	<author>MistrX</author>
	<datestamp>1255966860000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p>With all other news that comes as to be a 'breaktrough' in some field: First see then believe.<br>And I see it when flight plannings are altered.</p></htmltext>
<tokenext>With all other news that comes as to be a 'breaktrough ' in some field : First see then believe.And I see it when flight plannings are altered .</tokentext>
<sentencetext>With all other news that comes as to be a 'breaktrough' in some field: First see then believe.And I see it when flight plannings are altered.</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29794455</id>
	<title>AM Talk Radio career</title>
	<author>NoYob</author>
	<datestamp>1255968420000</datestamp>
	<modclass>Flamebait</modclass>
	<modscore>-1</modscore>
	<htmltext><i>Other than perhaps getting the eco-hippies to shut up about lofting lots of highly enriched nuclear fuel.</i> <p>Oh! And very good job of taking a sliver of truth, distorting it and turning it into an anti-environmentalist message! </p><p>You could have a career in AM Talk Radio. You just need to work in the "Liberals will stop human progress!" and you'd be making millions of dollars a year by just working 3-4 hours a day for 5 days a week!</p></htmltext>
<tokenext>Other than perhaps getting the eco-hippies to shut up about lofting lots of highly enriched nuclear fuel .
Oh ! And very good job of taking a sliver of truth , distorting it and turning it into an anti-environmentalist message !
You could have a career in AM Talk Radio .
You just need to work in the " Liberals will stop human progress !
" and you 'd be making millions of dollars a year by just working 3-4 hours a day for 5 days a week !</tokentext>
<sentencetext>Other than perhaps getting the eco-hippies to shut up about lofting lots of highly enriched nuclear fuel.
Oh! And very good job of taking a sliver of truth, distorting it and turning it into an anti-environmentalist message!
You could have a career in AM Talk Radio.
You just need to work in the "Liberals will stop human progress!
" and you'd be making millions of dollars a year by just working 3-4 hours a day for 5 days a week!</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29793897</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29794169</id>
	<title>Re:CANADA ROCKS!!!! Woooh</title>
	<author>Anonymous</author>
	<datestamp>1255967160000</datestamp>
	<modclass>None</modclass>
	<modscore>0</modscore>
	<htmltext><p><div class="quote"><p>Yeaaaaaaaaaaaaaaaaaahhhhhhh!</p><p>C'mon you Americans, it's not like you don't defend your national pride in space either!<nobr> <wbr></nobr>:-)</p></div><p>Bad premise.  Since the Bush administration, most of us don't <i>have</i> any national pride.</p></div>
	</htmltext>
<tokenext>Yeaaaaaaaaaaaaaaaaaahhhhhhh ! C'mon you Americans , it 's not like you do n't defend your national pride in space either !
: - ) Bad premise .
Since the Bush administration , most of us do n't have any national pride .</tokentext>
<sentencetext>Yeaaaaaaaaaaaaaaaaaahhhhhhh!C'mon you Americans, it's not like you don't defend your national pride in space either!
:-)Bad premise.
Since the Bush administration, most of us don't have any national pride.
	</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29793901</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29794955</id>
	<title>Re:4 out of 5 astronauts surveyed</title>
	<author>MadCow42</author>
	<datestamp>1255970820000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p>&gt;&gt; <i>preferred 39 days of abstinence to 6 months!</i></p><p>So, bring girl astronauts too... problem solved.  As long as they look like the Bond girls in Moonraker, who cares how long the trip takes?<nobr> <wbr></nobr>:)</p></htmltext>
<tokenext>&gt; &gt; preferred 39 days of abstinence to 6 months ! So , bring girl astronauts too... problem solved .
As long as they look like the Bond girls in Moonraker , who cares how long the trip takes ?
: )</tokentext>
<sentencetext>&gt;&gt; preferred 39 days of abstinence to 6 months!So, bring girl astronauts too... problem solved.
As long as they look like the Bond girls in Moonraker, who cares how long the trip takes?
:)</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29794405</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29795925</id>
	<title>these are like "smashing Moore;s Law" articles</title>
	<author>peter303</author>
	<datestamp>1255974540000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext>Only a tiny percent of them are commercially viable.
<br>
But enough to keep the trend going.</htmltext>
<tokenext>Only a tiny percent of them are commercially viable .
But enough to keep the trend going .</tokentext>
<sentencetext>Only a tiny percent of them are commercially viable.
But enough to keep the trend going.</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29794103</id>
	<title>Re:CANADA ROCKS!!!! Woooh</title>
	<author>Anonymous</author>
	<datestamp>1255966920000</datestamp>
	<modclass>None</modclass>
	<modscore>0</modscore>
	<htmltext><p>How many Canadians have walked on the moon, again?</p></htmltext>
<tokenext>How many Canadians have walked on the moon , again ?</tokentext>
<sentencetext>How many Canadians have walked on the moon, again?</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29793901</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29794149</id>
	<title>Old news</title>
	<author>davidwr</author>
	<datestamp>1255967100000</datestamp>
	<modclass>Funny</modclass>
	<modscore>2</modscore>
	<htmltext><p>If I'd left when I <a href="http://www.universetoday.com/2009/10/06/trips-to-mars-in-39-days/" title="universetoday.com" rel="nofollow">first heard this</a> [universetoday.com], I'd be about 1/3 way there, time-wise.</p></htmltext>
<tokenext>If I 'd left when I first heard this [ universetoday.com ] , I 'd be about 1/3 way there , time-wise .</tokentext>
<sentencetext>If I'd left when I first heard this [universetoday.com], I'd be about 1/3 way there, time-wise.</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29795737</id>
	<title>Re:CANADA ROCKS!!!! Woooh</title>
	<author>KWolfe81</author>
	<datestamp>1255973820000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext>Last I checked the markets... a Canadian day was just about on par with a US day.  What a weird world indeed!</htmltext>
<tokenext>Last I checked the markets... a Canadian day was just about on par with a US day .
What a weird world indeed !</tokentext>
<sentencetext>Last I checked the markets... a Canadian day was just about on par with a US day.
What a weird world indeed!</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29793901</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29802307</id>
	<title>Re:Needs serious power input for fast travel</title>
	<author>ShoeyFighter</author>
	<datestamp>1255958340000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext>Is  it possible to enrich the stuff in space?</htmltext>
<tokenext>Is it possible to enrich the stuff in space ?</tokentext>
<sentencetext>Is  it possible to enrich the stuff in space?</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29793897</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29794093</id>
	<title>Exactly wrong!</title>
	<author>starglider29a</author>
	<datestamp>1255966860000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext>At least from the "perception" angle. This is NOT the impulse engines from Star Trek. You can't limp to another star system on it. It doesn't fit nicely into the back of the saucer.<br> <br>
Having an efficient engine is great (when it gets here), but having 10-fold better efficiency mean you need ONLY 1/10 the amount of propellant. Propellant to accelerate you "halfway", propellant to decelerate you halfway... OK, then more propellant to accelerate you back home, then more to decelerate you as you approach earth. And that "few hundred newtons of thrust" won't accelerate/brake the ship very quickly.<br> <br>
You are still talking a Saturn V worth of Argon to get you to Mars and back. Think about 2001's Discovery. That spine was propellant tanks. Full. <br> <br>
How are you going to lift the ship? Space elevator?<br> <br>And I haven't even asked how you are going insert back into earth orbit. Atmospheric re-entry from the Moon was very tricky. And we were only falling from 1/4 million miles.</htmltext>
<tokenext>At least from the " perception " angle .
This is NOT the impulse engines from Star Trek .
You ca n't limp to another star system on it .
It does n't fit nicely into the back of the saucer .
Having an efficient engine is great ( when it gets here ) , but having 10-fold better efficiency mean you need ONLY 1/10 the amount of propellant .
Propellant to accelerate you " halfway " , propellant to decelerate you halfway... OK , then more propellant to accelerate you back home , then more to decelerate you as you approach earth .
And that " few hundred newtons of thrust " wo n't accelerate/brake the ship very quickly .
You are still talking a Saturn V worth of Argon to get you to Mars and back .
Think about 2001 's Discovery .
That spine was propellant tanks .
Full . How are you going to lift the ship ?
Space elevator ?
And I have n't even asked how you are going insert back into earth orbit .
Atmospheric re-entry from the Moon was very tricky .
And we were only falling from 1/4 million miles .</tokentext>
<sentencetext>At least from the "perception" angle.
This is NOT the impulse engines from Star Trek.
You can't limp to another star system on it.
It doesn't fit nicely into the back of the saucer.
Having an efficient engine is great (when it gets here), but having 10-fold better efficiency mean you need ONLY 1/10 the amount of propellant.
Propellant to accelerate you "halfway", propellant to decelerate you halfway... OK, then more propellant to accelerate you back home, then more to decelerate you as you approach earth.
And that "few hundred newtons of thrust" won't accelerate/brake the ship very quickly.
You are still talking a Saturn V worth of Argon to get you to Mars and back.
Think about 2001's Discovery.
That spine was propellant tanks.
Full.  
How are you going to lift the ship?
Space elevator?
And I haven't even asked how you are going insert back into earth orbit.
Atmospheric re-entry from the Moon was very tricky.
And we were only falling from 1/4 million miles.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29793839</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29794323</id>
	<title>Re:CANADA ROCKS!!!! Woooh</title>
	<author>Anonymous</author>
	<datestamp>1255967820000</datestamp>
	<modclass>Funny</modclass>
	<modscore>2</modscore>
	<htmltext><p><i>Bad premise. Since the Bush administration, most of us don't have any national pride.</i> </p><p>True, but then Canada isn't a real country either!  <i>(ducks!)</i></p></htmltext>
<tokenext>Bad premise .
Since the Bush administration , most of us do n't have any national pride .
True , but then Canada is n't a real country either !
( ducks ! )</tokentext>
<sentencetext>Bad premise.
Since the Bush administration, most of us don't have any national pride.
True, but then Canada isn't a real country either!
(ducks!)</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29794169</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29794815</id>
	<title>Re:CANADA ROCKS!!!! Woooh</title>
	<author>Anonymous</author>
	<datestamp>1255970160000</datestamp>
	<modclass>None</modclass>
	<modscore>0</modscore>
	<htmltext><p>Bad premise. Since the Obama administration, most of us don't have any national pride.</p></htmltext>
<tokenext>Bad premise .
Since the Obama administration , most of us do n't have any national pride .</tokentext>
<sentencetext>Bad premise.
Since the Obama administration, most of us don't have any national pride.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29794169</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29797467</id>
	<title>Yea, but.....</title>
	<author>Anonymous</author>
	<datestamp>1255980420000</datestamp>
	<modclass>None</modclass>
	<modscore>0</modscore>
	<htmltext><p>"A whole bunch of countries (were involved), but Canada has one of the main pieces of hardware. And this engine can get us to Mars in 39 days."</p><p>What they don't mention is that if you want to stop off at Mars you have to slow down before getting there - so it still takes 6 months to get there. Doh!</p><p>(trollin' for people that didn't read the article)</p></htmltext>
<tokenext>" A whole bunch of countries ( were involved ) , but Canada has one of the main pieces of hardware .
And this engine can get us to Mars in 39 days .
" What they do n't mention is that if you want to stop off at Mars you have to slow down before getting there - so it still takes 6 months to get there .
Doh ! ( trollin ' for people that did n't read the article )</tokentext>
<sentencetext>"A whole bunch of countries (were involved), but Canada has one of the main pieces of hardware.
And this engine can get us to Mars in 39 days.
"What they don't mention is that if you want to stop off at Mars you have to slow down before getting there - so it still takes 6 months to get there.
Doh!(trollin' for people that didn't read the article)</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29793791</id>
	<title>I'm dizzy.</title>
	<author>Anonymous</author>
	<datestamp>1255965660000</datestamp>
	<modclass>Interestin</modclass>
	<modscore>1</modscore>
	<htmltext><p>From the article:</p><p><i>A new NASA rocket engine, designed partly in Canada, raises the revolutionary possibility that a manned trip to Mars could take less than three months instead of two years.</i></p><p><i>[...]</i></p><p><i>It would take about 39 days to reach Mars, compared to six months by conventional rocket power.</i></p><p>In three paragraphs we go from 89 days to 39 days. So which is it? With that kind of difference, I'm not quite sure it would be any faster than conventional rockets.</p></htmltext>
<tokenext>From the article : A new NASA rocket engine , designed partly in Canada , raises the revolutionary possibility that a manned trip to Mars could take less than three months instead of two years. [ .. .
] It would take about 39 days to reach Mars , compared to six months by conventional rocket power.In three paragraphs we go from 89 days to 39 days .
So which is it ?
With that kind of difference , I 'm not quite sure it would be any faster than conventional rockets .</tokentext>
<sentencetext>From the article:A new NASA rocket engine, designed partly in Canada, raises the revolutionary possibility that a manned trip to Mars could take less than three months instead of two years.[...
]It would take about 39 days to reach Mars, compared to six months by conventional rocket power.In three paragraphs we go from 89 days to 39 days.
So which is it?
With that kind of difference, I'm not quite sure it would be any faster than conventional rockets.</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29797511</id>
	<title>Poor style...</title>
	<author>Anonymous</author>
	<datestamp>1255980540000</datestamp>
	<modclass>Offtopic</modclass>
	<modscore>0</modscore>
	<htmltext><p>Please do not start an article (or summary of an article) with "It", even if the referent appears in the title.</p></htmltext>
<tokenext>Please do not start an article ( or summary of an article ) with " It " , even if the referent appears in the title .</tokentext>
<sentencetext>Please do not start an article (or summary of an article) with "It", even if the referent appears in the title.</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29794963</id>
	<title>Re:made in Webster, TX</title>
	<author>guyminuslife</author>
	<datestamp>1255970820000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p>With the new offramp from I-45 to Nassau Bay, I didn't realize it was still known for anything.<nobr> <wbr></nobr>;-)</p></htmltext>
<tokenext>With the new offramp from I-45 to Nassau Bay , I did n't realize it was still known for anything .
; - )</tokentext>
<sentencetext>With the new offramp from I-45 to Nassau Bay, I didn't realize it was still known for anything.
;-)</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29794015</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29794977</id>
	<title>Artificial gravity?</title>
	<author>Anonymous</author>
	<datestamp>1255970940000</datestamp>
	<modclass>None</modclass>
	<modscore>0</modscore>
	<htmltext><p>So presumably this thing is thrusting all the time it is travelling: Accelerating constantly for the first half of the journey, and then flipover half way to decelerate for the second half, to arrive at the destination without any excess velocity.</p><p>How much acceleration does it provide? Is it enough that the crew would experience some kind of weak "artificial gravity" effect?</p></htmltext>
<tokenext>So presumably this thing is thrusting all the time it is travelling : Accelerating constantly for the first half of the journey , and then flipover half way to decelerate for the second half , to arrive at the destination without any excess velocity.How much acceleration does it provide ?
Is it enough that the crew would experience some kind of weak " artificial gravity " effect ?</tokentext>
<sentencetext>So presumably this thing is thrusting all the time it is travelling: Accelerating constantly for the first half of the journey, and then flipover half way to decelerate for the second half, to arrive at the destination without any excess velocity.How much acceleration does it provide?
Is it enough that the crew would experience some kind of weak "artificial gravity" effect?</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29801561</id>
	<title>Re:4 out of 5 astronauts surveyed</title>
	<author>Anonymous</author>
	<datestamp>1255953900000</datestamp>
	<modclass>None</modclass>
	<modscore>0</modscore>
	<htmltext><p>Because you're going to have sex with the martians, right?</p></htmltext>
<tokenext>Because you 're going to have sex with the martians , right ?</tokentext>
<sentencetext>Because you're going to have sex with the martians, right?</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29794405</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29794243</id>
	<title>Bathroom stops</title>
	<author>NoYob</author>
	<datestamp>1255967520000</datestamp>
	<modclass>Funny</modclass>
	<modscore>2</modscore>
	<htmltext>Trip times may vary as folks stop for bathrooms, coffee, and whatnot along the way. So that's where they're getting the 50 day difference.</htmltext>
<tokenext>Trip times may vary as folks stop for bathrooms , coffee , and whatnot along the way .
So that 's where they 're getting the 50 day difference .</tokentext>
<sentencetext>Trip times may vary as folks stop for bathrooms, coffee, and whatnot along the way.
So that's where they're getting the 50 day difference.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29793791</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29794619</id>
	<title>Get u ass to Mars</title>
	<author>Latinhypercube</author>
	<datestamp>1255969200000</datestamp>
	<modclass>None</modclass>
	<modscore>0</modscore>
	<htmltext>Get u ass to Mars. Get u ass to Mars. Get u ass to Mars. <br>
(In Schwarzeneggarian )</htmltext>
<tokenext>Get u ass to Mars .
Get u ass to Mars .
Get u ass to Mars .
( In Schwarzeneggarian )</tokentext>
<sentencetext>Get u ass to Mars.
Get u ass to Mars.
Get u ass to Mars.
(In Schwarzeneggarian )</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29793875</id>
	<title>Can it be used for ISStation keeping?</title>
	<author>Anonymous</author>
	<datestamp>1255966020000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p>Anyone know if there is enough thrust to counteract the drag the ISS has in the extremely thin atmosphere up there?</p><p>Does the running of the ion engine cause adverse effect to any of the delicate instrumentation on board?  Does it mess up any electric/magnetic measurements?</p><p>Is the power draw too great for it to be used in this fashion?</p><p>(TFA says "there are plans" to use it in this fashion but nothing beyond that).</p><p>*application of Niven's law: is there any way to make it into a beamed energy weapon against "soft targets" like other satellites in LEO?</p></htmltext>
<tokenext>Anyone know if there is enough thrust to counteract the drag the ISS has in the extremely thin atmosphere up there ? Does the running of the ion engine cause adverse effect to any of the delicate instrumentation on board ?
Does it mess up any electric/magnetic measurements ? Is the power draw too great for it to be used in this fashion ?
( TFA says " there are plans " to use it in this fashion but nothing beyond that ) .
* application of Niven 's law : is there any way to make it into a beamed energy weapon against " soft targets " like other satellites in LEO ?</tokentext>
<sentencetext>Anyone know if there is enough thrust to counteract the drag the ISS has in the extremely thin atmosphere up there?Does the running of the ion engine cause adverse effect to any of the delicate instrumentation on board?
Does it mess up any electric/magnetic measurements?Is the power draw too great for it to be used in this fashion?
(TFA says "there are plans" to use it in this fashion but nothing beyond that).
*application of Niven's law: is there any way to make it into a beamed energy weapon against "soft targets" like other satellites in LEO?</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29795781</id>
	<title>Re:I'm dizzy.</title>
	<author>rossdee</author>
	<datestamp>1255973940000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p>Maybe it depends on the orbital positions of both planets, there can be quite a difference in travel times.</p></htmltext>
<tokenext>Maybe it depends on the orbital positions of both planets , there can be quite a difference in travel times .</tokentext>
<sentencetext>Maybe it depends on the orbital positions of both planets, there can be quite a difference in travel times.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29793791</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29793851</id>
	<title>Re:I'm dizzy.</title>
	<author>Anonymous</author>
	<datestamp>1255965900000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext>89 days for a round trip mission.  39 out, 11 in orbit, 39 back...</htmltext>
<tokenext>89 days for a round trip mission .
39 out , 11 in orbit , 39 back.. .</tokentext>
<sentencetext>89 days for a round trip mission.
39 out, 11 in orbit, 39 back...</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29793791</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29794495</id>
	<title>Re:Tag as SLASHVERTISEMENT</title>
	<author>slack\_justyb</author>
	<datestamp>1255968600000</datestamp>
	<modclass>Insightful</modclass>
	<modscore>2</modscore>
	<htmltext>I have to agree with the grandparent.  VASMIR is old news as far as cutting edge technology.  Really, why not put out an article about how awesome Blu-Ray is (rolls eyes)?  So let's look pass the whole VASMIR thing and start looking at the applications themselves, "to be used on ISS in 2013" strikes me as the most useful piece of information in the summary.  VASMIR technology is getting better and better every day, but so is diesel and bio-diesel technology.<br> <br>At some point, continuing to beat the gong on something starts to make it look like those "Wow" commercials from the Windows Vista days, or all those promises of action during the campaigning days here in the United States.</htmltext>
<tokenext>I have to agree with the grandparent .
VASMIR is old news as far as cutting edge technology .
Really , why not put out an article about how awesome Blu-Ray is ( rolls eyes ) ?
So let 's look pass the whole VASMIR thing and start looking at the applications themselves , " to be used on ISS in 2013 " strikes me as the most useful piece of information in the summary .
VASMIR technology is getting better and better every day , but so is diesel and bio-diesel technology .
At some point , continuing to beat the gong on something starts to make it look like those " Wow " commercials from the Windows Vista days , or all those promises of action during the campaigning days here in the United States .</tokentext>
<sentencetext>I have to agree with the grandparent.
VASMIR is old news as far as cutting edge technology.
Really, why not put out an article about how awesome Blu-Ray is (rolls eyes)?
So let's look pass the whole VASMIR thing and start looking at the applications themselves, "to be used on ISS in 2013" strikes me as the most useful piece of information in the summary.
VASMIR technology is getting better and better every day, but so is diesel and bio-diesel technology.
At some point, continuing to beat the gong on something starts to make it look like those "Wow" commercials from the Windows Vista days, or all those promises of action during the campaigning days here in the United States.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29793803</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29794791</id>
	<title>Re:4 out of 5 astronauts surveyed</title>
	<author>cathector</author>
	<datestamp>1255969980000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p>.. implying there's a whole passel of people to it with once you reach Mars ??</p></htmltext>
<tokenext>.. implying there 's a whole passel of people to it with once you reach Mars ?
?</tokentext>
<sentencetext>.. implying there's a whole passel of people to it with once you reach Mars ?
?</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29794405</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29794827</id>
	<title>ALIENZ</title>
	<author>Anonymous</author>
	<datestamp>1255970220000</datestamp>
	<modclass>None</modclass>
	<modscore>0</modscore>
	<htmltext><p>Sweet!<br>39 days to bring back a carnivorous alien life form to earth, instead of 6 months!</p></htmltext>
<tokenext>Sweet ! 39 days to bring back a carnivorous alien life form to earth , instead of 6 months !</tokentext>
<sentencetext>Sweet!39 days to bring back a carnivorous alien life form to earth, instead of 6 months!</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29794639</id>
	<title>Re:I'm dizzy.</title>
	<author>Aceticon</author>
	<datestamp>1255969260000</datestamp>
	<modclass>Funny</modclass>
	<modscore>2</modscore>
	<htmltext><p>I think they mean 39 work-days, 89 days in total.</p><p>Obviously the engine will not work on weekends, so that's 2 days out of 7, roughly 24 in total.</p><p>Then there are religious holidays for the astronauts, not to mention national holidays for each nationality represented in the team. I reckon that's about 3 days a month, or roughly 9 days in total.</p><p>Then there's mandatory vacation time, about 25 days a year or roughly 8 days for the trip.</p><p>Assuming everybody is working really hard, coffee, cigarette and bathroom breaks will probably only add up to 3 days in total.</p><p>Of the remaining 45 days, one is preparation before the trip, one to really get going and one is basically wasted on the whole "arrival, get the luggage out and unpack it". Same thing on the Mars side. That's another 6 days.</p><p>This is the reason for the difference.</p></htmltext>
<tokenext>I think they mean 39 work-days , 89 days in total.Obviously the engine will not work on weekends , so that 's 2 days out of 7 , roughly 24 in total.Then there are religious holidays for the astronauts , not to mention national holidays for each nationality represented in the team .
I reckon that 's about 3 days a month , or roughly 9 days in total.Then there 's mandatory vacation time , about 25 days a year or roughly 8 days for the trip.Assuming everybody is working really hard , coffee , cigarette and bathroom breaks will probably only add up to 3 days in total.Of the remaining 45 days , one is preparation before the trip , one to really get going and one is basically wasted on the whole " arrival , get the luggage out and unpack it " .
Same thing on the Mars side .
That 's another 6 days.This is the reason for the difference .</tokentext>
<sentencetext>I think they mean 39 work-days, 89 days in total.Obviously the engine will not work on weekends, so that's 2 days out of 7, roughly 24 in total.Then there are religious holidays for the astronauts, not to mention national holidays for each nationality represented in the team.
I reckon that's about 3 days a month, or roughly 9 days in total.Then there's mandatory vacation time, about 25 days a year or roughly 8 days for the trip.Assuming everybody is working really hard, coffee, cigarette and bathroom breaks will probably only add up to 3 days in total.Of the remaining 45 days, one is preparation before the trip, one to really get going and one is basically wasted on the whole "arrival, get the luggage out and unpack it".
Same thing on the Mars side.
That's another 6 days.This is the reason for the difference.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29793791</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29795471</id>
	<title>Re:Tag as SLASHVERTISEMENT</title>
	<author>Anonymous</author>
	<datestamp>1255972800000</datestamp>
	<modclass>None</modclass>
	<modscore>0</modscore>
	<htmltext><blockquote><div><p>could make a manned mission to MARS much more feasible and safer.</p><blockquote><div><p>It also places manned missions to other planets within reach. Trips to Titan anyone?</p></div></blockquote></div></blockquote></div>
	</htmltext>
<tokenext>could make a manned mission to MARS much more feasible and safer.It also places manned missions to other planets within reach .
Trips to Titan anyone ?</tokentext>
<sentencetext>could make a manned mission to MARS much more feasible and safer.It also places manned missions to other planets within reach.
Trips to Titan anyone?
	</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29793803</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29793839</id>
	<title>Please, please, PLEASE...</title>
	<author>Kirin Fenrir</author>
	<datestamp>1255965900000</datestamp>
	<modclass>Funny</modclass>
	<modscore>5</modscore>
	<htmltext>Let the common name be "impulse engines".</htmltext>
<tokenext>Let the common name be " impulse engines " .</tokentext>
<sentencetext>Let the common name be "impulse engines".</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29809041</id>
	<title>This will be much bigger than it appears</title>
	<author>Impy the Impiuos Imp</author>
	<datestamp>1256056980000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p>If this pans out, it will be much bigger than it appears.  A huge multi-government Mars trip will be little more than a test run for industry.  Now getting about the solar system is on the order of sailing ships traveling the ocean under wind power, rather than a ridiculous, multi-year trip just for one way.</p><p>Basically, you just need to build ships to be sturdy enough to last out a few months if they break down, so a "rescue ship" can come get them.</p><p>If you can get to Mars in 39 days, the asteroids, Jupiter, Saturn and beyond are not much further.  It's now feasible to populate the solar system.</p><p>Eat your Wheaties so you can live long enough to take a poop on Europa just to spite the monoliths.</p></htmltext>
<tokenext>If this pans out , it will be much bigger than it appears .
A huge multi-government Mars trip will be little more than a test run for industry .
Now getting about the solar system is on the order of sailing ships traveling the ocean under wind power , rather than a ridiculous , multi-year trip just for one way.Basically , you just need to build ships to be sturdy enough to last out a few months if they break down , so a " rescue ship " can come get them.If you can get to Mars in 39 days , the asteroids , Jupiter , Saturn and beyond are not much further .
It 's now feasible to populate the solar system.Eat your Wheaties so you can live long enough to take a poop on Europa just to spite the monoliths .</tokentext>
<sentencetext>If this pans out, it will be much bigger than it appears.
A huge multi-government Mars trip will be little more than a test run for industry.
Now getting about the solar system is on the order of sailing ships traveling the ocean under wind power, rather than a ridiculous, multi-year trip just for one way.Basically, you just need to build ships to be sturdy enough to last out a few months if they break down, so a "rescue ship" can come get them.If you can get to Mars in 39 days, the asteroids, Jupiter, Saturn and beyond are not much further.
It's now feasible to populate the solar system.Eat your Wheaties so you can live long enough to take a poop on Europa just to spite the monoliths.</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29793901</id>
	<title>CANADA ROCKS!!!! Woooh</title>
	<author>gapagos</author>
	<datestamp>1255966140000</datestamp>
	<modclass>Funny</modclass>
	<modscore>4</modscore>
	<htmltext><i>A new NASA rocket engine, designed partly in Canada, raises the revolutionary possibility that a manned trip to Mars could take less than three months instead of two years.</i>
<br>(...)<br>
<i>A whole bunch of countries (were involved), but Canada has one of the main pieces of hardware.</i>
<br> <br>
Yeaaaaaaaaaaaaaaaaaahhhhhhh!
<br>
C'mon you Americans, it's not like you don't defend your national pride in space either!<nobr> <wbr></nobr>:-)</htmltext>
<tokenext>A new NASA rocket engine , designed partly in Canada , raises the revolutionary possibility that a manned trip to Mars could take less than three months instead of two years .
( ... ) A whole bunch of countries ( were involved ) , but Canada has one of the main pieces of hardware .
Yeaaaaaaaaaaaaaaaaaahhhhhhh ! C'mon you Americans , it 's not like you do n't defend your national pride in space either !
: - )</tokentext>
<sentencetext>A new NASA rocket engine, designed partly in Canada, raises the revolutionary possibility that a manned trip to Mars could take less than three months instead of two years.
(...)
A whole bunch of countries (were involved), but Canada has one of the main pieces of hardware.
Yeaaaaaaaaaaaaaaaaaahhhhhhh!

C'mon you Americans, it's not like you don't defend your national pride in space either!
:-)</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29793883</id>
	<title>Re:I'm dizzy.</title>
	<author>garcia</author>
	<datestamp>1255966080000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p>Thanks everyone. I'm dumb. I blame the 800 miles of driving in the last 24 hours.</p></htmltext>
<tokenext>Thanks everyone .
I 'm dumb .
I blame the 800 miles of driving in the last 24 hours .</tokentext>
<sentencetext>Thanks everyone.
I'm dumb.
I blame the 800 miles of driving in the last 24 hours.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29793791</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29796013</id>
	<title>Re:Needs serious power input for fast travel</title>
	<author>Anonymous</author>
	<datestamp>1255974960000</datestamp>
	<modclass>None</modclass>
	<modscore>0</modscore>
	<htmltext><p>Hey How about a small Fussion Reactor?   As reported on shashdot they are starting testing it now.  http://science.slashdot.org/story/09/10/18/1652201/A-Step-Closer-To-Cheap-Nuclear-Fusion</p></htmltext>
<tokenext>Hey How about a small Fussion Reactor ?
As reported on shashdot they are starting testing it now .
http : //science.slashdot.org/story/09/10/18/1652201/A-Step-Closer-To-Cheap-Nuclear-Fusion</tokentext>
<sentencetext>Hey How about a small Fussion Reactor?
As reported on shashdot they are starting testing it now.
http://science.slashdot.org/story/09/10/18/1652201/A-Step-Closer-To-Cheap-Nuclear-Fusion</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29793897</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29796731</id>
	<title>Hope for the future!</title>
	<author>Anonymous</author>
	<datestamp>1255977780000</datestamp>
	<modclass>None</modclass>
	<modscore>0</modscore>
	<htmltext><p>I'm glad to see we're planning beyond 2012.  I thought for sure we'd be skunked for sure with doomsday quickly approaching.</p></htmltext>
<tokenext>I 'm glad to see we 're planning beyond 2012 .
I thought for sure we 'd be skunked for sure with doomsday quickly approaching .</tokentext>
<sentencetext>I'm glad to see we're planning beyond 2012.
I thought for sure we'd be skunked for sure with doomsday quickly approaching.</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29795631</id>
	<title>Re:Exactly wrong!</title>
	<author>mpe</author>
	<datestamp>1255973460000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><i>And I haven't even asked how you are going insert back into earth orbit. Atmospheric re-entry from the Moon was very tricky. And we were only falling from 1/4 million miles.</i> <br> <br>The only part of Apollo which came back to Earth was the command module. You only need to get the ship back into Earth <b>orbit</b>. Then you either have parts of the crew accomodation serve as suitable capsules or you send up some Soyuz-TMA craft to dock.</htmltext>
<tokenext>And I have n't even asked how you are going insert back into earth orbit .
Atmospheric re-entry from the Moon was very tricky .
And we were only falling from 1/4 million miles .
The only part of Apollo which came back to Earth was the command module .
You only need to get the ship back into Earth orbit .
Then you either have parts of the crew accomodation serve as suitable capsules or you send up some Soyuz-TMA craft to dock .</tokentext>
<sentencetext>And I haven't even asked how you are going insert back into earth orbit.
Atmospheric re-entry from the Moon was very tricky.
And we were only falling from 1/4 million miles.
The only part of Apollo which came back to Earth was the command module.
You only need to get the ship back into Earth orbit.
Then you either have parts of the crew accomodation serve as suitable capsules or you send up some Soyuz-TMA craft to dock.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29794093</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29793705</id>
	<title>Tag as SLASHVERTISEMENT</title>
	<author>Anonymous</author>
	<datestamp>1255965300000</datestamp>
	<modclass>Troll</modclass>
	<modscore>-1</modscore>
	<htmltext><p>Sorry, guys, but VAWSIMR has been covered too many times. This is an ad.<br>
&nbsp; <br>Amen.</p></htmltext>
<tokenext>Sorry , guys , but VAWSIMR has been covered too many times .
This is an ad .
  Amen .</tokentext>
<sentencetext>Sorry, guys, but VAWSIMR has been covered too many times.
This is an ad.
  Amen.</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29793897</id>
	<title>Needs serious power input for fast travel</title>
	<author>Anonymous</author>
	<datestamp>1255966140000</datestamp>
	<modclass>Interestin</modclass>
	<modscore>5</modscore>
	<htmltext><p>Mind you to obtain this 39 day route, you're not going to be doing it by feeding the VASIMR's klystrons off solar cells stuck to the outside of the ship.  That's more of a one year sort of trip.</p><p>If you want the 39 days, you're going to need to pump the voltage in with a classic onboard nuclear reactor.  Not to worry though, both the US and Russians made and tested (The Russians flew) several dozen types of space borne fission reactors in the 60s-80s  so this is no great leap.  Other than perhaps getting the eco-hippies to shut up about lofting lots of highly enriched nuclear fuel.</p></htmltext>
<tokenext>Mind you to obtain this 39 day route , you 're not going to be doing it by feeding the VASIMR 's klystrons off solar cells stuck to the outside of the ship .
That 's more of a one year sort of trip.If you want the 39 days , you 're going to need to pump the voltage in with a classic onboard nuclear reactor .
Not to worry though , both the US and Russians made and tested ( The Russians flew ) several dozen types of space borne fission reactors in the 60s-80s so this is no great leap .
Other than perhaps getting the eco-hippies to shut up about lofting lots of highly enriched nuclear fuel .</tokentext>
<sentencetext>Mind you to obtain this 39 day route, you're not going to be doing it by feeding the VASIMR's klystrons off solar cells stuck to the outside of the ship.
That's more of a one year sort of trip.If you want the 39 days, you're going to need to pump the voltage in with a classic onboard nuclear reactor.
Not to worry though, both the US and Russians made and tested (The Russians flew) several dozen types of space borne fission reactors in the 60s-80s  so this is no great leap.
Other than perhaps getting the eco-hippies to shut up about lofting lots of highly enriched nuclear fuel.</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29794263</id>
	<title>Re:I'm dizzy.</title>
	<author>wren337</author>
	<datestamp>1255967580000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p><div class="quote"><p>From the article:</p><p> <i>A new NASA rocket engine, designed partly in Canada, raises the revolutionary possibility that a manned trip to Mars could take less than three months instead of two years.</i> </p><p> <i>[...]</i> </p><p> <i>It would take about 39 days to reach Mars, compared to six months by conventional rocket power.</i> </p><p>In three paragraphs we go from 89 days to 39 days. So which is it? With that kind of difference, I'm not quite sure it would be any faster than conventional rockets.</p></div><p>Round trip.  Less than three months round trip, 39 days each way.</p></div>
	</htmltext>
<tokenext>From the article : A new NASA rocket engine , designed partly in Canada , raises the revolutionary possibility that a manned trip to Mars could take less than three months instead of two years .
[ ... ] It would take about 39 days to reach Mars , compared to six months by conventional rocket power .
In three paragraphs we go from 89 days to 39 days .
So which is it ?
With that kind of difference , I 'm not quite sure it would be any faster than conventional rockets.Round trip .
Less than three months round trip , 39 days each way .</tokentext>
<sentencetext>From the article: A new NASA rocket engine, designed partly in Canada, raises the revolutionary possibility that a manned trip to Mars could take less than three months instead of two years.
[...]  It would take about 39 days to reach Mars, compared to six months by conventional rocket power.
In three paragraphs we go from 89 days to 39 days.
So which is it?
With that kind of difference, I'm not quite sure it would be any faster than conventional rockets.Round trip.
Less than three months round trip, 39 days each way.
	</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_10_19_1324222.29793791</parent>
</comment>
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