Space is expanding right now and its accelerating atm.
Untill the point that there isnt any more dark energy (dark energy isnt some edgy video game stuff. Its does something the opposite gravity does.), space will implode on itself, and another big bang will happen repeating everyhing. Something allong those lines.
This is one of the theories. There are about 3 of those that actually make sense but I think this is the best one
And if anyone ask whats on the "edge" of space its just dark space.