Tuesday 27 January 2015

WHAT IS A BLACK HOLE...?



Hi guys do you know what is a black  hole....?

Black holes are the most mysterious bodies in the whole universe. Astronomers consider a black hole as a stage in the evolution of the star. They are probably formed when a supernova occurs. If a star is ten times more massive than the sun, no known force can stop the increasing gravity, and it will collapse to a point of infinite density. Before  this stage is reached, within a certain radius, light itself becomes trapped, and the object becomes invisible, and becomes a black hole. With the invention of invisible radiations like radio waves,ultraviolet, X-rays etc. locating the  invisible black hole has been possible. Black holes are the densest areas in the Universe.


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