- #1
Jack_O
- 65
- 0
I have read that "A universe with a spherical geometry is called a closed universe because a universe with this geometry must be finite" but even after looking up different sources i cannot find an decent explanation of it is finite. I know that a flat universe is just an unbound 3d grid that goes on forever and is therefore infinite, a hyperbolic universe is also infinite because it stretches on forever (i can't really visualize this).
I can't understand a why a spherical universe has to be finite. Would appreciate it if someone could shed some light on this for me.
I can't understand a why a spherical universe has to be finite. Would appreciate it if someone could shed some light on this for me.