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He started geography essentially
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It took him 18 years to develop the Ptolemic system which was earthcentric.
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copernican heliocentrism. It was the first time anyone said that the sun was the center.
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Created Keplers 3 laws. They brought a better understanding of planetary motion.
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He is known for the Tychonic system. it combined the copernican and the ptolemaic systems.
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He was the first at Cambridge to not be a priest. He also invented calculus to help explain physic.
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Special relatively. Without this there would be no gps.
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