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The Big Bang Theory
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14 billions years ago, massive amount of material exploded
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The first billion years clumped together to form clouds that collapsed to become galaxies
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The first billion years clumped together to form clouds that collapsed to become galaxies
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5 billion years ago the sun started to form in a cloud called nebula
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billions of years ago kilometers away a supernova event made the earth
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1900's realization that the universe is immense and orderly