- Born 190 BC in Nicaea and died 120 BC
- Astronomer, Mathematician.
- Possibly one of the first to discover a method in predicting Solar Eclipses using his solar and lunar theories and his trigonometry skills.
-Discovery of the earths precision.
-The computation of the first comprehensive star catalog of the western world
-Possibly invented the astrolabe and the armillary sphere, which he used during the creatin of the star catalog.
-Hipparchus is thought to be the first to calculate a heliocentric system, but was proved wrong because the calculations showed the orbits were not perfectly circular as believed to be mandatory by the theology of the time and soon gave up the theory.
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