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A comment on Proving our universe is one among many would be a fourth Copernican revolution. Parent comment

Re:Proving our universe is one among many would be a fourth ... by roywiggins on Friday September 28, 2018 @03:22PM (#18096256)
Any information that gets to us via some alien friends will have to travel even further than photons from those stars. By the time we got the alien signal, we would have seen photons from those stars already.
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