What effect will be there when two black holes collide each other

Black holes are considered as a heavenly body which are formed after the death of the star. They have large mass with infinite density and due to this they have high gravitational force of attraction. They have such a high gravity that even light cannot escape from it. So every body that goes into it cannot escape from it. In most of the case they are also predicted as a path of exit from one place of the universe to another. They are said as a intermediate between the two universe. However we dont have much proof  to believe onto it. Our sun is not gonna be a black hole after millions of years because to be a black hole the mass should be 39 times more than that of the sun. In the same way our sun will only be turn into white dwarf. In this today topic we will discuss what will happen when two black holes are collide with each other. It may be a question for many of the people. lets discuss on it today.
       The result of collision depends upon how fast the two black holes are moving, in the same way it also depends upon the rate of spinning while as it also depends upon the size of them. When two black holes one having larger mass and other having smaller mass collide with each other then in that case what we observe is that they just move round each other and the small black hole is thrown out from its center of orbit. In the same way when two black holes of having greater mass collide with each other in such a way that they spin too fast then it that case they spin with each other at a very high speed and at last they merge with each other to form a larger black hole of having high density, high mass and that of the high gravitation. The latest discovery of the science is the discovery of gravitational waves by LIGO in which they discovered gravitational waves when two black holes move or spin round with each other. This is based on the Einsteins theory of relativity in which he conclude that the space is a fourth dimensional fabrics and the gravitational waves are produced when the body of high gravitation move with each other. This made theory of relativity more strong.
     The ahiuchus constellation is considered as a super galaxy which is supposed to be formed by the collision of two galaxies so it contains two black holes and one day it is considered that it will collide and a great collision takes place. The scientist has never found the black hole collision but have recorded its collision sound. This is what are the main themes that will happen when two black holes collide with each other