(July 26, 2017 at 11:36 pm)Alex K Wrote: The size of the entire universe is currently unknown, but there doesn't have to be a relationship with the size of the visible universe which is just a result of age+expansion it could be infinite for all we know. Or at least orders of magnitude larger than what we see.
Yea but you still have theories of parallel and bubble "multiverse".
But just with the one we know, there is a strong indication that the one we are in will run out of energy. If I am not correct. Also known as "heat death".