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  • Hipparchus - Wikipedia
    Hipparchus is considered the greatest ancient astronomical observer and, by some, the greatest overall astronomer of antiquity [4][5] He was the first whose quantitative and accurate models for the motion of the Sun and Moon survive
  • Hipparchus | Biography, Discoveries, Accomplishments, Facts | Britannica
    Hipparchus (born, Nicaea, Bithynia [now Iznik, Turkey]—died after 127 bce, Rhodes?) was a Greek astronomer and mathematician who made fundamental contributions to the advancement of astronomy as a mathematical science and to the foundations of trigonometry
  • Hipparchus of Nicea: Greatest Astronomer of His Time
    Hipparchus of Nicea (l c 190 - c 120 BCE) was a Greek astronomer, geographer, and mathematician regarded as the greatest astronomer of antiquity and one of the greatest of all time
  • Hipparchus - Biography, Facts and Pictures - Famous Scientists
    Hipparchus was one of antiquity’s greatest scientists A Greek mathematician and astronomer, he measured the earth-moon distance accurately, founded the mathematical discipline of trigonometry, and his combinatorics work was unequalled until 1870
  • Hipparchus (astronomer) - New World Encyclopedia
    Hipparchus is recognised as the first mathematician to compile a trigonometry table, which he needed when computing the eccentricity of the orbits of the Moon and Sun
  • Hipparchus - 120 BC) - Biography - MacTutor History of Mathematics
    Hipparchus was a Greek mathematician who compiled an early example of trigonometric tables and gave methods for solving spherical triangles
  • Hipparchus | History | Research Starters - EBSCO
    Hipparchus was the greatest astronomer of ancient times He was the founder of trigonometry, which he used to determine the distances from Earth to the moon and sun, and the first to use consistently the idea of latitude and longitude to describe locations on Earth and in the sky
  • Hipparchus – Famous Mathematicians
    It was none other than Hipparchus who raised important questions such as what the length of a year was and what the lunar distances were Curious to find an answer, Hipparchus extensively studied the solar and lunar motions and their orbits using several calculations and techniques
  • Hipparchus - New Mexico Museum of Space History
    Hipparchus recorded astronomical observations from 147 to 127 BC, all apparently from the island of Rhodes During this period he may have invented the planispheric astrolabe, a device on which the celestial sphere is projected onto the plane of the equator
  • Hipparchus - University of Oregon
    Hipparchus' catalog, completed in 129 BC, listed about 850 stars (not 1,080 as is often stated), the apparent brightnesses of which were specified by a system of six magnitudes similar to that used today





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