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Theory, Geographer, Astronomer, Mathematician, Geocentric, Philosopher.
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Meme, Sun-centric theory, death bed, correct, godly, patient.
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tools, earth is center, globe, supernova, stars, advanced
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Hans Lippershey invented it and Galileo improved the it
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astronomer, planets, elliptical, planetary-motion, electrical, solar system,
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heliocentric, theory, telescope, compass, thermometer, stars.
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calculus, motion, gravity, experiments, laws, scientist
