Comments on: Earth Life Forms Ejected on Asteroid Impact Could Survive and Return Again http://www.universetoday.com/2008/02/27/earth-life-forms-ejected-on-asteroid-impact-could-survive-and-return-again/ Space and astronomy news Sun, 22 Nov 2009 03:07:54 -0600 http://wordpress.org/?v=2.8.6 hourly 1 By: ASZ http://www.universetoday.com/2008/02/27/earth-life-forms-ejected-on-asteroid-impact-could-survive-and-return-again/comment-page-1/#comment-41628 ASZ Wed, 19 Nov 2008 22:27:16 +0000 http://www.universetoday.com/2008/02/27/earth-life-forms-ejected-on-asteroid-impact-could-survive-and-return-again/#comment-41628 Interesting...! :) Interesting…! :)

]]> By: asteroid impact http://www.universetoday.com/2008/02/27/earth-life-forms-ejected-on-asteroid-impact-could-survive-and-return-again/comment-page-1/#comment-18879 asteroid impact Thu, 24 Apr 2008 08:35:15 +0000 http://www.universetoday.com/2008/02/27/earth-life-forms-ejected-on-asteroid-impact-could-survive-and-return-again/#comment-18879 [...] an asteroid or comet impacted Earth, the resulting ejection of materials could contain life forms.http://www.universetoday.com/2008/02/27/earth-life-forms-ejected-on-asteroid-impact-could-survive-an...Impact event - Wikipedia, the free encyclopedia... caused by the collision of large meteoroids, [...]

[...] an asteroid or comet impacted Earth, the resulting ejection of materials could contain life forms.http://www.universetoday.com/2008/02/27/earth-life-forms-ejected-on-asteroid-impact-could-survive-an…Impact event – Wikipedia, the free encyclopedia… caused by the collision of large meteoroids, [...]

]]> By: Steve Boltzmann http://www.universetoday.com/2008/02/27/earth-life-forms-ejected-on-asteroid-impact-could-survive-and-return-again/comment-page-1/#comment-14635 Steve Boltzmann Sun, 02 Mar 2008 16:04:11 +0000 http://www.universetoday.com/2008/02/27/earth-life-forms-ejected-on-asteroid-impact-could-survive-and-return-again/#comment-14635 >> Given the contemplation of the destruction of life on Earth, it’s somewhat comforting to think that we could perhaps start over again from our own ingredients.<< Comforting in some wonder-ticking fantasy world reverie maybe, but astronomically, it's nonsense. Martian meteorites are one thing; Mars is very small, its gravity is small, its orbit is outside that of Earth. But the Earth is massive by comparison, and so massive in fact that only the largest impacts might send Earth rock into orbit where it might possibly--but only barely and so most improbably--reach Mars. So Earth meteorites on Mars are a completely different thing. It isn't that easy. Then the author adds that by sheer chance, life from Earth could have survived the required colossal impact; and could have, by sheer chance, survived being transported to Mars where it improbably flourished; and then, by sheer chance, been once again subjected to a random impact that sent it into orbit and that it, by sheer chance, survived another most improbable space journey and found its way back to Earth. It's all so improbable, so implausible that it's laughable. What scientific question does this answer? None. It's nothing but wonder-tickling speculation unfettered by astronomical realities and informed scientific realism's practical skepticism. It's Nonsense. Life evolved on Earth, took a completely unnecessary, long, all but impossible and certainly implausible round-trip journey to Mars completely without consequence and is indistinguishable from having never left. Hmmm? Lacking concrete evidence from beginning to end of the reality of this seemingly most implausible of hypotheses, it doesn't even rise to the level of falsifiability. It's a wild answer to a nonexistent question. So besides its astronomical, biological and practical improbabilty and obvious implausibility--contrary to the article's bizarre claim of plausibility--it fails to satisfy several tests for the validation of a theory as scientific according to Popperian demarcation. >> Given the contemplation of the destruction of life on Earth, it’s somewhat comforting to think that we could perhaps start over again from our own ingredients.<<

Comforting in some wonder-ticking fantasy world reverie maybe, but astronomically, it's nonsense.
Martian meteorites are one thing; Mars is very small, its gravity is small, its orbit is outside that of Earth. But the Earth is massive by comparison, and so massive in fact that only the largest impacts might send Earth rock into orbit where it might possibly–but only barely and so most improbably–reach Mars. So Earth meteorites on Mars are a completely different thing. It isn't that easy.
Then the author adds that by sheer chance, life from Earth could have survived the required colossal impact; and could have, by sheer chance, survived being transported to Mars where it improbably flourished; and then, by sheer chance, been once again subjected to a random impact that sent it into orbit and that it, by sheer chance, survived another most improbable space journey and found its way back to Earth. It's all so improbable, so implausible that it's laughable. What scientific question does this answer? None. It's nothing but wonder-tickling speculation unfettered by astronomical realities and informed scientific realism's practical skepticism. It's Nonsense.
Life evolved on Earth, took a completely unnecessary, long, all but impossible and certainly implausible round-trip journey to Mars completely without consequence and is indistinguishable from having never left. Hmmm? Lacking concrete evidence from beginning to end of the reality of this seemingly most implausible of hypotheses, it doesn't even rise to the level of falsifiability. It's a wild answer to a nonexistent question.
So besides its astronomical, biological and practical improbabilty and obvious implausibility–contrary to the article's bizarre claim of plausibility–it fails to satisfy several tests for the validation of a theory as scientific according to Popperian demarcation.

]]> By: saito http://www.universetoday.com/2008/02/27/earth-life-forms-ejected-on-asteroid-impact-could-survive-and-return-again/comment-page-1/#comment-14577 saito Sat, 01 Mar 2008 15:08:39 +0000 http://www.universetoday.com/2008/02/27/earth-life-forms-ejected-on-asteroid-impact-could-survive-and-return-again/#comment-14577 hope this day will never come.... hope this day will never come….

]]> By: Yael Dragwyla http://www.universetoday.com/2008/02/27/earth-life-forms-ejected-on-asteroid-impact-could-survive-and-return-again/comment-page-1/#comment-14490 Yael Dragwyla Fri, 29 Feb 2008 04:07:58 +0000 http://www.universetoday.com/2008/02/27/earth-life-forms-ejected-on-asteroid-impact-could-survive-and-return-again/#comment-14490 Drew -- What on Earth do hot Latina pornos have to do with panspermia theory, anyway? Drew — What on Earth do hot Latina pornos have to do with panspermia theory, anyway?

]]> By: Chuck Lam http://www.universetoday.com/2008/02/27/earth-life-forms-ejected-on-asteroid-impact-could-survive-and-return-again/comment-page-1/#comment-14461 Chuck Lam Thu, 28 Feb 2008 20:26:16 +0000 http://www.universetoday.com/2008/02/27/earth-life-forms-ejected-on-asteroid-impact-could-survive-and-return-again/#comment-14461 Interesting hypothesis. I wonder what the study folks figured a meteorite impact mass/velocity ratio typically is for ejecta of anykind to reach earth's escape velocity of six miles per second? Interesting hypothesis. I wonder what the study folks figured a meteorite impact mass/velocity ratio typically is for ejecta of anykind to reach earth's escape velocity of six miles per second?

]]> By: Mike Calimbas http://www.universetoday.com/2008/02/27/earth-life-forms-ejected-on-asteroid-impact-could-survive-and-return-again/comment-page-1/#comment-14442 Mike Calimbas Thu, 28 Feb 2008 14:50:58 +0000 http://www.universetoday.com/2008/02/27/earth-life-forms-ejected-on-asteroid-impact-could-survive-and-return-again/#comment-14442 the notion that we could concievably impregnate another planet... this sounds like a reach to me.... albeit I will admit that the idea sounds plausible. the notion that we could concievably impregnate another planet… this sounds like a reach to me…. albeit I will admit that the idea sounds plausible.

]]> By: Steve http://www.universetoday.com/2008/02/27/earth-life-forms-ejected-on-asteroid-impact-could-survive-and-return-again/comment-page-1/#comment-14395 Steve Thu, 28 Feb 2008 04:01:44 +0000 http://www.universetoday.com/2008/02/27/earth-life-forms-ejected-on-asteroid-impact-could-survive-and-return-again/#comment-14395 Jaap, Our best bet for confirming this is to actually find a rock on the surface of the planet that has been confirmed from another celestial body. Im not sure, but most objects orbiting the planet are travelling at very high speeds. Jaap,
Our best bet for confirming this is to actually find a rock on the surface of the planet that has been confirmed from another celestial body. Im not sure, but most objects orbiting the planet are travelling at very high speeds.

]]> By: Laszlo http://www.universetoday.com/2008/02/27/earth-life-forms-ejected-on-asteroid-impact-could-survive-and-return-again/comment-page-1/#comment-14384 Laszlo Thu, 28 Feb 2008 00:13:17 +0000 http://www.universetoday.com/2008/02/27/earth-life-forms-ejected-on-asteroid-impact-could-survive-and-return-again/#comment-14384 Endospores, lichen, cyano-endoliths, what kind of life we lookin for? Let's just take care of this globe so we don't wind up imprisoned in some impact-protective rock. I couldn't handle the lifestyle change! Endospores, lichen, cyano-endoliths, what kind of life we lookin for? Let's just take care of this globe so we don't wind up imprisoned in some impact-protective rock. I couldn't handle the lifestyle change!

]]> By: Jaap http://www.universetoday.com/2008/02/27/earth-life-forms-ejected-on-asteroid-impact-could-survive-and-return-again/comment-page-1/#comment-14368 Jaap Wed, 27 Feb 2008 20:26:49 +0000 http://www.universetoday.com/2008/02/27/earth-life-forms-ejected-on-asteroid-impact-could-survive-and-return-again/#comment-14368 This is a plausible assumption which could actually be verified in the foreseable future. If by impact ejected rocks have surviving lifeforms, then lets collect a few. They should be out there, most likely circelling the earth. If such microbes are indeed found, then of course one wonders whether they originate from earth, mars or , yes, from another solarsystem!? The latter will be hard to accertain but if more than 2 origins are confirmed.....it will start building a case for itself. This is a plausible assumption which could actually be verified in the foreseable future. If by impact ejected rocks have surviving lifeforms, then lets collect a few. They should be out there, most likely circelling the earth. If such microbes are indeed found, then of course one wonders whether they originate from earth, mars or , yes, from another solarsystem!? The latter will be hard to accertain but if more than 2 origins are confirmed…..it will start building a case for itself.

]]> By: BaselessReport http://www.universetoday.com/2008/02/27/earth-life-forms-ejected-on-asteroid-impact-could-survive-and-return-again/comment-page-1/#comment-14326 BaselessReport Wed, 27 Feb 2008 15:46:29 +0000 http://www.universetoday.com/2008/02/27/earth-life-forms-ejected-on-asteroid-impact-could-survive-and-return-again/#comment-14326 Looks like the 'National Enquirer' [gad, I don't think I can even spell it!] strikes again!!! Looks like the 'National Enquirer' [gad, I don't think I can even spell it!] strikes again!!!

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