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Originally Posted by Dan02
Always wondered that as well. If the universe at one point didn't exist, where did it expand into??? If we managed to get to the theoretical edge of the universe, what's on the other side?
And as far as i can tell there isn't a satisfactor answer out there that the layperson can understand.
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There is no "theoretical edge". Just like there's no edge of the beachball.
It expanded into the "fourth dimension".
Like I said, it's basically impossible to conceptualize.
What does it expand into? I guess the best answer would be itself. I wish I had a thought experiment for you, but I don't.