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Apr 29, 1054
Chinese Astronomers observe supernova
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Galileo uses telescope
Italy -
Halley predicts the return of Halley's Comet
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Johann Galle discovers Neptune
Germany -
Russians launch Sputnik
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Yuri Gagarin is first man in space
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Armstrong is the first man to walk the moon
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Cassini begins its journey to Saturn
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First visual proof of black holes
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Al Mamon founds the school of Astronomy
Iraq