Well, I heard the edge of the universe is an enveloping wormhole that funnels the universe back into the center of itself. That's why the universe is perpetually expanding and accelerating and will never retract. When all of the universe has been funneled back to its center, the wormhole will release it and there'll be another big bang.
Where do you people get those fairy tales about there being space outside the universe and the universe retracting?
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