@hylian said:
So man scientists point to the big bang as to how everything came into existence. I accept that the big bang is probably what happened in the beginning because the scientist's have found some proof and it makes more sense then some invisible man in the sky making everything out of nothing. But if someone comes up with more convincing proof for something else then I would believe that. But my point is that if the universe was some tiny particle at some pint then shouldn't it have been somewhere? Also if the universe is expanding then shouldn't it have to be expanding into something else? Shouldn't that prove the existence of a multiverse?
You should check out the Science Thread. This is exactly the kind of question and discussion I made it for.
But, to answer your question...
The universe doesnt expand into space, since all space is part of the universe. The universe just gets bigger and stretches, in the sense that all of space gets bigger. There is no 3D space "outside" of the universe. Think of it as the universe being an expanding balloon, and the surface of the balloon is what we know of as 3D space. So, the balloon is expanding in a higher-dimension space, but it's not expanding into any existing 3D space.
It doesnt necessarily prove there's a multiverse, because there might or might not be any other universes in that higher-dimensional space... assuming that's how it works.
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