What are the Different Types of Black Holes?

A black hole is a celestial body that exists in cosmic space in modern general relativity. The gravitation of a black hole is extremely powerful, making the escape speed in the horizon more than the speed of light. Therefore, "a black hole is a celestial body whose curvature in space and time is so large that light cannot escape from its event horizon ." ^[1-3]

The densest objects in the universe: black holes are the remnants of stars, and they end their lives in the form of supernovas. They are characterized by an area of space in which gravity is so strong that even light cannot escape. The boundary of this area is called the horizon. At the center of the black hole is the singularity. The mass of the dead star is compressed to a single point of zero size and infinite density. It is this singularity that produces the powerful gravitational field of a black hole. (Guinness World Records)