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mk  ·  4212 days ago  ·  link  ·    ·  parent  ·  post: Curiosity could be carrying Earth bacteria, threatening search for Mars life

Where the ISS orbit is, unless they boost the poo out, it should all end up as meteor poo.

But, I would think that there are some mechanisms by which biological material from Earth could get to Mars. Massive asteroid impacts might result in ejecting living material into space.