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geocentric universe, astronomy books, Greek, craters
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heliocentricity, church prosecuted, orbits/distances Sun
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developed instruments, geocentric model, supernovas, Mars
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physicist, mathematician, heresy, military, heliocentricity, laws
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Three laws: elliptical, speed, orbit; heliocentric
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Hans Lippershey is thought to have invented the first telescope.
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gravity, motion laws, books, calculus, telescope
