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A comment on Scientists found genetic mutations in every astronaut blood sample they studied. Parent comment
It's also an open question whether it formed on Earth at all or came here from elsewhere.
So there is no answer to your question as yet. Or at least there's no scientific consensus on one.
There are no comments on this comment yet.
It's also an open question whether it formed on Earth at all or came here from elsewhere.
So there is no answer to your question as yet. Or at least there's no scientific consensus on one.