How can the universe be finite?

1 Answer
Nov 20, 2015

It most likely is since energy and matter cannot be created or destroyed.

Explanation:

Easiest way to explain it is to look at the big bang. If the universe started with a super hot, super dense bit of matter (say the size of a sugar cube) it has to have very specific margins. 1 second after the big bang the rapidly expanding universe still has to have very specific margins. And since the matter was a definite mass and did not have infinite energy, which is not possible, the universe, although vast, cannot be infinite.