Naturalis Principia (prin-SI-pee-uh) Mathematica.
This man greatly improved the invention of Niccolo Zucchi (ZOOK-kee), and in correspondence with John Flamsteed he dismissed the notion that comets have polarity. The flattening of the Earth at the poles was first suggested by this man, whose De motu corporum in gyrum (JIGH-rum) contained a new derivation of Kepler's third law. This man famously settled a celestial mechanics dispute between Robert Hooke and Edmond Halley by offering a proof of the inverse square law. Significantly advancing astronomy with his 1668 reflecting telescope, name this man who successfully explained the elliptical orbits of planets with his theory of universal gravitation in his book Philosophiae (fee-loh-soh-FEE-ay) Naturalis Principia (prin-SI-pee-uh) Mathematica.
This man greatly improved the invention of Niccolo Zucchi (ZOOK-kee), and in correspondence with John Flamsteed he dismissed the notion that comets have polarity.
Sir Isaac Newton