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Ptolemy suggests geocentric theory of the universe
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copernicus publishes his heliocentric theory of the Universe.
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Kepler creates his first and secong law
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Ole Romer measures the speed of light.
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Hans Lippershey makes the telescope
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piazza finds ceres asteroid
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Schiaparell sees canals on mars
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The Great Red Spot on Jupiter becomes prominent.
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Clyde Tombaugh finds pluto
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Al mamon founds baghdad astronomy school