[meteorite-list] Alien Microbes Could Survive Crash-Landing

From: VeIocity_at_aol.com <VeIocity_at_meteoritecentral.com>
Date: Tue Sep 14 12:01:37 2004
Message-ID: <08694570.3A3C9A9A.0083611C_at_aol.com>

The "life from Mars" fanatics make several leaps of faith in imagining Martian "space seeds," full of viable bacteria, raining down from our skies. ?If we accept that the solar planets are all basically the same age, and life first appeared here a few hundred million years after Earth's formation (the planet was still "hot" at the time), then this is a pretty small window for a LOT of activity. ? The infant Mars would have to evolve a hearty bacterial population, suffer a catastrophic impact that ejected bacteria-laden stones back into solar orbit, and those "infected" Martian rocks would require several million more years of space migration to the Earth---and all of this would transpire in the solar system's first few hundred million years of existence? ?I'm not saying it's impossible; rather, I'm saying that this is a scenario that is supported by not one shred of evidence.


In a message dated 9/14/2004 3:48:18 AM Eastern Daylight Time, "mark ford" <markf_at_ssl.gb.com> writes:

>> .. <Snip> ... Bacteria could survive crash-landing on other planets, a
>British team has found. >>

>Interesting, but they appear to have kinda missed out the 'extreme
>cosmic radiation' and the heat/cold bit, that would likely kill the
>little suckers...
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>Best,
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>Mark Ford
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Received on Tue 14 Sep 2004 12:00:20 PM PDT