I have a question. Does space really exist as a relative thing, e.g. does it really expand, or does space (I’m not talking about outer space, I’m talking about just space) exist infinitely and the universe is just inside of this infinite space? Like, is space like a balloon, or like a eternal ocean? I believe the latter. I don’t believe it is logically possible for room to get bigger or smaller. I think the universe could expand eternally. Thoughts?