[BradyLS]

Cool! How did they figure the process out? It makes perfect sense, though. For that matter, I did they know that the metoerite particles with the speculated fossilzed microbe forms come from Mars?

[sleavelessinseattle]

Late to the party here...Perfectimundo MtGrl...I didn't know you were going to assign us HOMEWORK!!! SPectrographic analysis has been raised to a fine art and I imagine the unique composition of the sample and the fact that no earthly geologic process would have deposited the material on top of an ice flow, led scientists on a hunt for what sort of source would have had that balance of rock and minerals...the microtubules supposedly resembling primitive bacteria action are similar to fossilized remains generated here but are significantly smaller in size...nothing quite like it has been found native to earth as far as I remember which puts the whole discovery in question... The theory that a big strike on mars knocked chunks of material into space where it had an orbit that allowed some of it to fall to earth is amazingly complex, but Occams razor must be followed and rocks don't just precipitate onto Antarctica! They come from somewhere...