What is a black hole ? A black hole in space is a region where the gravitational force is so strong that even light can not escape it. Any matter which comes under the influence of a black hole will be crushed down to a confined space and is being eaten by the black hole. Black holes are formed when a star dies. Not every star can become a black hole only which have mass 1.4 times the mass of our sun. ( approx 2.8E30). A few black holes are orbited by the other heavenly bodies and are slowly eaten away by the black holes. As the matter falls towards the event horizon it gets heated due to the increasing gravitational pull and the friction and forms a bright circular disc around the black hole known as Assertion disc . On the basis of mass and sizes black holes has been divided into four categories:- 1.) Stellar black holes When a star with a mass range from five to several tens times of the solar masses c...
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