Black holes are undoubtedly the most bizarre and mysterious objects in space. Their bizarre properties can defy the laws of physics of the universe, and even the nature of the existing reality. To understand what a black hole is, we must learn to think “outside the box” and use a little imagination. Black holes are formed from the nuclei of super massive stars, which can be characterized as a region of space where a huge mass of concentration in the void, and nothing, not even light can escape the gravitational pull there. This is an area where the escape velocity exceeds the speed of light. The more massive the object movement, the faster he has to move to get rid of their forces of gravity. This is known as the escape velocity.
Black holes are so massive that its escape velocity faster than the speed of light. Since nothing can travel faster than light, nothing can escape the gravity of a black hole. Einstein’s theory of relativity is the first key to understanding black holes.
A common myth about black holes say that they suck all the matter around them. But it is not. They will absorb the matter which is at a certain distance, but otherwise they do not operate differently than massive stars.
Let’s summarize by watching a video: