Write a note on the black holes.

A black hole is the region on space from which nothing can escape even the light cannot escape from it. These black holes are formed when a massive star (here massive means very large can be equivalent to our solar system) at the end of life cycle collapse in a supernova and eventually end up into a black hole. Once a black hole is formed it will continue to grow its mass by absorbing mass from its surrounding.

Around the black hole, we may image a surface called event horizon. Light reaching the event horizon is absorbed by black hole “points of no return”.

Additional information:

There are two type of event horizon:

a) outer event horizon

b) inner event horizon