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아이작 아시모프
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How did we find out the earth is round?
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How did we find out about the universe?
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How did we find out about the speed of light?
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How did we find out about the brain?
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How did we find out about the beginning of life?
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How did we find out about genes?
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How did we find out about energy? (How did we find …
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How did we find out about earthquakes?
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How did we find out about dinosaurs?
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How did we find out about Pluto?
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