How can the universe be infinite in size if its been…
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How can the universe be infinite in size if its been expanding at a finite rate for a finite amount of time?
There is supposed to be a currently unfalsifiable possibility that the universe is infinite in size, but it's only been expanding at a rate much lower than infinity, even in inflation, and only for 13.8 billion years. I've heared lots of anologies that it went from one size, to the size of a football, in a certain amount of time and such, so how could it have gone from that to infinity?
Excluding non-euclidean geometries, I don't get how it could have gotten infinitely large without either having expanded for an infinite amount of time, expanded at an infinite rate, or started off at an infinite size. How come we haven't ruled out a flat, infinite universe for this reason?
#science
There is supposed to be a currently unfalsifiable possibility that the universe is infinite in size, but it's only been expanding at a rate much lower than infinity, even in inflation, and only for 13.8 billion years. I've heared lots of anologies that it went from one size, to the size of a football, in a certain amount of time and such, so how could it have gone from that to infinity?
Excluding non-euclidean geometries, I don't get how it could have gotten infinitely large without either having expanded for an infinite amount of time, expanded at an infinite rate, or started off at an infinite size. How come we haven't ruled out a flat, infinite universe for this reason?
#science
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