Who is Stephen Hawking .Why he is famous ?
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Stephen Hawking, in full Stephen William Hawking, (born January 8, 1942, Oxford, Oxfordshire, England—died March 14, 2018, Cambridge, Cambridgeshire), English theoretical physicist whose theory of exploding black holes drew upon both relativity theory and quantum mechanics. He also worked with space-time singularities.
He argued forcefully that travel backward in time is disallowed by the laws of physics, which (as he put it) “makes the world safe for historians.” No one understood time better than Stephen Hawking. Stephen's greatest scientific achievement was a discovery about black holes in 1974 that shook the world of physics.
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Answer:
English theoretical physicist whose theory of exploding black holes drew upon both relativity theory and quantum mechanics. He also worked with space-time singularities.