The conversation between human and AI assistant.
They say that the universe is forever expanding, if so, what is it expanding "into"?
Wow, that's fascinating. Can you tell me more about these other dimensions?
Sure. So, according to string theory, there could be up to 11 dimensions, each of which is capable of hosting unique physical phenomena. But since we can only perceive four dimensions -- three spatial dimensions and one time dimension -- it's really difficult to wrap our heads around what these other dimensions might be like.