Axial tilt
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What links here
Regiomontanus
Pietro d'Abano
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List of astronomers
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Domenico Maria Novara da Ferrara
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Timeline of telescopes, observatories, and observing technology
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Albert Brudzewski
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Georg Joachim Rheticus
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Prime meridian
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1471
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1436
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1476
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Trigonometric functions
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Tycho Brahe
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Square root
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Pope Sixtus IV
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Nuremberg
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Meteorology
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July 6
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June 6
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Diophantus
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Comet
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Regiomontan
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