I have understood that the universe is expanding at an accelerated rate. I have also thought, perhaps mistakenly, that this expansion means not that the masses in the universe are moving away from each other as in some explosion, but rather that the actual space was expanding and in so doing creating the illusion that masses were moving. This is also how I have understood the big bang. Is this correct, and if actual space is expanding, does not not also have to have an edge if as data show the universe is not looped on itself but rather flat?
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