The Big Bang theory explains the rapid expansion of the universe from a hot, dense state, leading to the formation of stars, galaxies, and heavy elements.
According to the Big Bang theory, the universe began about 13.7 billion years ago, starting from a tiny volume of hot, chaotic mass. An enormous explosion, the Big Bang, caused the universe to rapidly expand. This expansion led to the formation of stars, galaxies, and eventually, heavier elements such as carbon and oxygen.
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