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Evolution of Universe The three main theories put forward to explain the origin and evolution of the universe are: The Big Bang Theory The Steady State Theory The Pulsating Theory 1. The Big Bang Theory: Le Maitre and Gammow proposed this theory. Picture courtesy of schoolscience.co.ukAccording to this theory, at the beginning of the universe, the whole matter of the universe was once concentrated in an extremely dense and hot (~10 12K) fireball. Then about 20 billion years ago a vast explosion (big bang) occurred. The matter was broken into pieces, which were thrown out with high speed in all directions forming stars
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submitted by edison (4551 m) on 4 Apr 2007 16:08:16 IST (1 comments 131 views)
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