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cosmology. The first event was Einstein ( 1917 ) applying the gravitation theory on the cosmic scale in static view. But then Friedmann ( 1922 , 1924 ) established a dynamic universe model based on Einstein's general theory of relativity when he recognized
Darwin was 29 when he developed the concept of natural selection; Albert Einstein was 26 when he formulated the theory of relativity and Isaac Newton was 24 when he began work on universal gravitation (Cole 1979 ). Empirical studies on this theme