this post was submitted on 09 Feb 2024

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If time is relative, how can we say the known universe is 13 billion years old. Wouldn’t different parts of the universe been in existence for more or less time? Is this relative to us? Or an average? (self.askscience)

submitted 9 months ago by SuckMyWang to c/[email protected]

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[–] Candelestine 2 points 9 months ago

It's a guesstimate based on taking the expansion rate of the universe and running it backwards until it was all squished back into a point.