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Hipparchus, also spelled Hipparchos (b. , Nicaea, Bithynia [now Iznik, Turkey]-d. after 127 bc , Rhodes?), Greek astronomer and mathematician who made fundamental contributions to the advancement of astronomy as a mathematical science and to the foundations of trigonometry.
Cladius Ptolemy
Greek astronomer and mathematician
Modeled the movements of the Sun, the Moon, and the five known planets (Mercury, Venus, Mars, Jupiter, and Saturn) in the skies to great accuracy, with a geocentric system of orbits and epicycles.
Born: 85 in Egypt
Died: 165 in Alexandria, Egypt
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Which astronomer's treatise was named 'Panchasiddhantika'?
The astronomer whose treatise was named 'Panchasiddhantika' was Varahamihira, an ancient Indian mathematician and astronomer who made significant contributions to the field of astronomy.
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Aristarchus of Samos, a Greek mathematician and astronomer, about 2300 years ago.
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Who made the word geography?
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