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————The origin of the universe—— -----
On "the Big Bang Theory" , it is believed that the universe was formed by a dense and hot singularity after a big explosion 13.7 billion years ago. The Big Bang Hypothesis was first proposed in 1927 by Belgian Astronomer and cosmologist Georges Lema tre. In 1929, Hubble, an American astronomer, hypothesized that the redshift of galaxies was proportional to their distance from each other, and deduced the theory that the universe was expanding as galaxies moved away from each other. One of the most influential theories in modern cosmology. Its main idea is that the universe has a history of evolution from hot to cold. During this time, the cosmic system was expanding, causing the density of matter to evolve from dense to sparse, as if in a massive explosion. One of the founders of the theory was George Gamow. In 1946, the American physicist George Gamow formally proposed the Big Bang theory, which holds that the universe was formed by a big bang about 14 billion years ago. OBSERVATIONS OF SUPERNOVAE IA at the end of the last century suggest that the universe is speeding up in its expansion, as it is likely to be made up mostly of dark energy.
Above comes from the Chinese "Baidu Baike"