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Detailed explanation-1: -Georges Lemaître, (1894-1966), Belgian cosmologist, Catholic priest, and father of the Big Bang theory.

Detailed explanation-2: -George Gamow (March 4, 1904 – August 19, 1968), born Georgiy Antonovich Gamov (Ukrainian: , Russian: ), was a Russian-born Soviet and American polymath, theoretical physicist and cosmologist. He was an early advocate and developer of Lemaître’s Big Bang theory.

Detailed explanation-3: -George Gamow’s fame as a physicist began with his theory that explained the radioactive alpha particle decay of atomic nuclei. In his cosmological studies, he is known for the “big bang” theory of the origin of the universe, and in 1954 his studies in biology led him to suggest that the genetic code was a triplet code.

Detailed explanation-4: -LeMaitre, born in Belgium, was a monsignor in the Catholic church. He was fascinated by physics and studied Einstein’s laws of gravitation, published in 1915. He deduced that if Einstein’s theory were true (and there had been good evidence for it since 1919), it meant the universe must be expanding.