I was never sure just how serious Crick was when he proposed panspermia. It's possible that the common ancestor of earth life was a primitive bacteria-like organism from outer space. But what bothers me about the hypothesis is that nothing is gained if it's true or not. There are no novel predictions that we could test and we still have to explain the origin of life, it just gets moved to a different arena. I am also annoyed that the article implies that there is new evidence for panspermia when really it's just that new evidence suggests that it is simply not impossible!
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