What do we know about black holes?
If you are fascinated by stars it's likely that you've also done a bit of research into black holes. Black holes are deeply related to stars as they are incredibly massive items out in the universe. The region of a black hole it is actually incredibly small and involve a relationship between gravity and mass it creates a gravitational force out in the universe.
The gravitational force that is produced by black holes is so powerful that even light gets trapped in them. We are often able to see evidences of black holes in telescope data because we simply see light disappearing into a completely blank area within the field of view.
The general theory surrounding black holes is that the compact mass with in this phenomenon can actually deform space-time and create a gravitational field that acts like a massive pit. It can bend space-time with the incredibly dense center or singularity.
Black holes were all once stars and the theory surrounding them is that once a star dies off it collapses continually and rapidly. As stores continue to collapse it will explode into a supernova event. The outer material surrounding the star expulses away from the major shift in gravity and then is sucked inward causing this massive pit where the star once sat.
It's likely that we have black holes found throughout our galaxy as well as in neighboring galaxies. These are phenomenon that are responsible for the formation of our universe. A check in the balance after a star disappears.