>    They didn't actually find any living creatures inside the rock,
 > just little odd-shaped formations that may have been caused by
 > microbial life. Of course, once they started to consider the
 > possibility of a mistake, somebody remembered
 > a geological process that would give the same formations.
 >  II> Has anyone considered the possibility that that rock was formed on
 >  II> THIS planet and never left?
 >    Don't you think that's the first thing they checked?
 >  II> COULD it have been formed during some
 >  II> primevel time at some other location here, then "blown" to where it 
was
 >  II> found by a volcanic eruption at some time in the past?
 >    No. It's definitely a Mars rock (but don't ask me how they know).
 > Paul
They can tell from the gases inside the rock. ...Percentages, or something.
js
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