Big Crunch universe will turn into a giant black hole and collapse into a single point called singularity

BIG CRUNCH: our universe will start shrinking and collapse into singularity

One of very popular theory about our fate of universe is BIG CRUNCH. It says that as our universe is created from a single point through big bang and someday it will return to the point from where it started called singularity. Our universe is currently expanding due to the explosion of big bang. It is assumed that due to the gravitational pull of the stars, this expansion will stop and our universe will start shrinking.

This is called BIG CRUNCH.