The Big Freeze, also known as the Heat Death, is a scenario where the universe continues ... its belts already being ...

In extreme scenarios, evolving dark energy could either accelerate the universe's expansion to the point of tearing it apart in a "Big Rip" or cause it to collapse inward in a "Big Crunch." ...

In the "big rip" scenario, as the acceleration of universal expansion increases toward infinity within a finite time, all matter down to the scale of atoms and subatomic particles, and spacetime ...