Much like a black body in
thermodynamics, a black hole is a region of space that pulls everything and
prevents anything from escaping, even light. The reason it is called a
"black" hole is because it sucks up all the light that hits its
border and reflects nothing. Formed when an amply compact mass deforms space
and time, a black hole has a defined surface known as the "event
horizon" which marks the point of no return. Little is known about black
holes but several scientists in history have developed their own theories about
their properties and structures.
Here is a list of 25 crazy
facts about black holes.