Does the universe have a literal centre (i.e. a physical point in space where the distances to the edges of the universe in all directions are equal)? Assuming the universe isn't infinite, which would make it far easier to understand that it doesn't have a centre, or is a 2d sphere like the skin of a balloon. Just to clarify: I'm not asking about the centre of the expansion of the universe. I understand that space itself is what's expanding, not the matter inside of it. I hope someone can help me out, Thanks!