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Big Bang theory
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It is a scientific theory about the origin of the universe. The universe was created approximately 10 to 20 billion years ago from a cosmic explosion that throw matter in all directions. A scientist call Lemaitre in 1927 proposed that the universe began with an explosion of a primeval atom. This theory was based on observing the red shift in distant nebulas. Many years later a scientist called Hubble found that distant galaxies in every direction are going away from earth with speeds proportional to their distance. This gave evidence to help justify Lemaitre’s theory. This theory explained why distant galaxies are travelling away form earth at great speeds. It also predicts the existence of cosmic background radiation. This is the glow left over from the explosion itself. In 1964 scientist’s Penzias and Wilson discovered radiation which confirmed the Big Bang Theory.
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