Great Astronomers: Johannes Kepler
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Great Astronomers: Nicolaus Copernicus
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Great Astronomers: Galileo Galilei
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Great Astronomers: Pierre-Simon Laplace
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Great Astronomers: William Herschel
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Great Astronomers: Isaac Newton
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Great Astronomers: Tycho Brahe
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Great Astronomers: John Flamsteed
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Great Astronomers: Edmond Halley
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