when we hear the word black hole the first thing that raise on our mind is a object which observe the thing go near to it. The black hole contains of huge of gravitational force and negative force. The black hole contains of small and sharp atoms which is enough to cut a rocket or a space ship. Black hole is formed for example when a piece of got fire in an end after the wood is completely burned a black colour formation will be formed this is also a type of black hole. let's see detailed in chapter-2