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100 A.D. model body movement greek earth astronomy middle
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1514 A.D. mathematician science sun middle deathbed present
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1572 A.D. Prove religion wrong sextant astronomer inventor
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1605 A.D. four moons jupiter february mechanics pendulums
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1609 A.D. Revoled sun solar system kepler's theory
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1623 A.D. apple tree inspiration movement scientist friend aristotle