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Do you believe in Aliens?
(lemmy.world)
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this post was submitted on 10 Apr 2024
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Asklemmy
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Hey, I don't know if we even have to argue, your math checks out. But, is 425 years really insurmountable? The first Earth-like planets could be billions of years older than ours. IIRC Fermi himself estimated 3 million to settle the whole galaxy.
Let's go by light cones and local interval (clock time in one's own reference frame), if we are going to argue. This shit can get so confusing if we try to define "now", especially if a relativistically fast ship comes up.