The outstanding Russian physicist, Lev Landau, and the famous Cambridge astronomer, Arthur Eddington, disagreed in their creative space, there was no room for the black hole. In 1931, the great Indian astrophysicist, Subrahmanyan Chandrasekhar, calculated using the special theory of relativity, that a non-rotating body of electron-degenerate matter above a certain limiting mass - now called Chandrasekhar Limit - at 1.4 solar mass, has no stable solution and thus turns gravitationally unstable. The idea of a massive cosmic body from where light could not escape was first suggested by the English clergyman, John Michell, way back in 1784 he assumed - erroneously - the density of the massive body to be the same as that of the sun. In some way, black holes come out of Einstein’s equation, but Einstein refused to believe in their existence. His involvement with Albert Einstein’s general theory of relativity is intense his other abiding passion is with black holes. The PenroseHawking singularity theorems (after Roger Penrose and Stephen Hawking) are a set of results in general relativity that attempt to answer the. Together with Stephen Hawking, Penrose showed that. He has been visiting Calcutta for more than 25 years. Professor Sir Roger Penrose (born 8 August 1931, Colchester, England) is an English mathematician. I have known Roger Penrose closely for quite some time.
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