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Ptolemaic Model, Rome, Claudius,Astronomy, center
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Nicholas, scientific revolution, sun, center,heliocentric
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Brahe Danish, Combined thoughts, sextant, island, Kepler
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mathematics teacher, Pisa, falls, better telescope
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Heliocentric, Johannes, used math+science, elliptic
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3 laws, telescope, inertia, force, reaction, influential
