Newtonian telescope
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What links here
John Hadley
Royal Society
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1682 in science
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1731 in science
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1744 in science
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George Hadley
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List of mountains on the Moon
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History of the telescope
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List of inventors
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Prime meridian
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1682
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1744
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18th century
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Sextant
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Scientific Revolution
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Octans
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Navigation
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Isaac Newton
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February 14
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April 16
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