They say it "curves in" on itself, and that this somehow resolves the paradox of finity (a time before the Big Bang and a space/non-space/nothing beyond the expanding edge of the expanding universe). Now I have an important question. If I were God, and the universe were floating in a fish bowl, then based on our current understanding would it even have a geometry that could be perceived and even illustrated? Or would that contravene its spacetime laws? Not long ago some scientists claimed it resembles a soccer ball, then they said no,no- it is more like a fountain. But how can they say these things when an absolute medium by which to define its edges necessarily eludes any rationalization? How can space itself have an end?