Matt D. afn02065 at
Fri Aug 9 11:12:17 MDT 1996

Lisa writes:

>What makes anybody think that some meteorite in anarctica is actually
>a chunk of _Mars_ ?

I would presume it's chemical composition, huh?  While many dispute
the evidence of life, no one, to my knowledge, is disputing that it's
a piece of Mars.

It's not hard to imagine that an impact w/ an asteroid would be able to
accelerate a piece of the planet to escape velocity, is it?

If there was bacterial life on Mars 4 billion years ago, how does that
compare to the beginnings of life on Earth?  About the same?

-- Matt D.

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