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Principia Mathematica

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  1. Halley's Comet Appears in UK Google Logo

    He convinced Sir Issac Newton to publish PhilosophiÊ Naturalis Principia Mathematica (1687), which was published at Halley's expense. Edmond Halley, the English astronomer who computed the orbit and named the famous Halley's Comet, was born on this...