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13.8 billion years ago the universe formed from a tiny, dense,hot point, which rapidly expanded.
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3 seconds after the Big Bang. Simple elements' nuclei formed.
(H, He) -
10,000 years after the big bang, the universe was mostly radiation (pure energy)
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300,000 years after the big bang, Hydrogen, and Helium are formed.
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300 million years after the Big Bang the first stars form from clouds of gas.
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9 billion years after the Big Bang ( 4.8 billion years ago) , our sun was born
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9 billion years after the Big Bang, (4.5 billion years ago) Earth formed from dust orbiting the sun.
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10 billion years after the Big Bang Earth, the earliest life on earth can begin