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geocentrism, treatises, greek astronomy, 1400 years, astronomy, writer
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heliocentric, model, scientific revolution, orbits, controversial, solar system
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nonose, supernovas, sun and moon revolve around earth, astronomer, instruments,
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3 laws, orbit of planets, model, elliptical, planetary motion, heliocentric,helped newton
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Hans Lippershey invente the telescope,
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laws of motion, calculus, mathematician, astronomer, gravity
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hericy, heliocentric, telescope, sun spots, moon, universal law of acceleration,
