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he was a greek mathematician, he invented the disciplen of geography still used today he was also the first person to calculate the circumference of the earth
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he made the geocentric model, saying everything orbited earth
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his thery was that the sun was at the center of the universe. he even published a book about it too
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he helped flip the therory that the sun was in the center of the universe he overturned it
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best known for his laws of planetary motion he also In 1609 he published Astronomia Nova, delineating his discoveries, which are now called Kepler's first two laws of planetary motion.
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constructed the first reflective teloscope in 1668
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he developed the therory of realitvity one of the two pillars of modern physics, he also created mass-energy equivlence, e=mcsquared
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