Question #1: Are there other earths with human life on them?
My answer: I doubt it, although I have seen people say there must be, because there are so many billions of suns in the universe, but I do not understand how one could arrive at an estimate of probability from a known case of only one--US!
Your answer?...
My answer: I doubt it, although I have seen people say there must be, because there are so many billions of suns in the universe, but I do not understand how one could arrive at an estimate of probability from a known case of only one--US!
Your answer?...
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