Re:Liquid water 'lake' revealed on Mars
by criddell on Wednesday July 25, 2018 @01:17PM
(#17610969)
Wouldn't rock from Earth end up on Mars the same way that Martian rocks fall on Earth? If so, then contamination may have already happened in both directions.
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True, but if we transport a modern microbe then we might miss our chance to isolate the relatively "indigenous" version and be unable to prove that such naturally occurring exchanges are possible.