The end of the universe is mystery, but this documentary explores some of the most popular theories.

The end of the universe is a mystery, but this documentary explores some of the most popular theories. What do you think will happen? Will the universe expand forever, eventually becoming a cold and dark place? Will it collapse back in on itself in a Big Crunch? Or will something else entirely happen? Watch this documentary to learn more about the possible fates of the cosmos.
The documentary discusses four main theories about the end of the universe: heat death, Big Crunch, Big Rip, and vacuum decay.

Heat death is the theory that the universe will eventually reach a state of equilibrium, with all matter and energy evenly distributed.

Big Crunch is the theory that the universe will eventually collapse back in on itself, leading to a singularity.

Big Rip is the theory that the expansion of the universe will accelerate to the point where even atoms are torn apart.

Vacuum decay is the theory that a new vacuum state will suddenly appear, causing the universe to be destroyed.