The Big Bang is a scientific theory that explains the origin and evolution of the universe. It states that the universe began as a single point of infinite density and temperature, which suddenly expanded outward in a massive explosion roughly 13.8 billion years ago. As the universe expanded and cooled, subatomic particles began to form, eventually leading to the formation of stars, galaxies, and all other matter in existence. The Big Bang theory is supported by a wealth of observational evidence, including cosmic microwave background radiation and the observed distribution of galaxies throughout the universe.
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