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Ask an Astrobiologist has received nearly a thousand questions about Nibiru and 2012, with more than 200 answers posted. Please read a summary of the answers that have already been posted, use the search feature and read the FAQ’s before submitting questions on these topics.
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Question
Is there any evidence that panspermia keeps going on nowadays?
There is no evidence that panspermia -- the transport of life to a world by microbes traveling between planets -- has ever happened. It is an attractive hypothesis, especially for possible migration of life from Mars to Earth. We know martian rocks, ejected by collisions, can make it to Earth intact. But the martian rocks we have examined do not contain viable microbes, and we can only guess whether they might have in the past. David Morrison
NAI Senior Scientist
October 2, 2006
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