Morall_tach t1_iykjn7k wrote
Reply to comment by PrayForMojo_ in Mars had an ancient asteroid impact similar to the Chicxulub ‘planet killer’ impact on Earth, a discovery that may have astrobiological implications by marketrent
Yes, but the presence of an impact crater does not imply that there was life killed off by that impact or that life evolved somewhere other than earth.
PrayForMojo_ t1_iykphod wrote
That’s not what they’re saying.
It’s that a planet killer asteroid may have destroyed Mars’ atmosphere and turned it inhospitable to life. So if we do end up finding signs of even microbial life, we now have a fairly strong theory on why it didn’t survive.
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