21 h 52 m, 31 dic 370 año aC - Eudoxus of Cnidus
Descripción:
 Eudoxus of Cnidus created a mechanical system that explained the motions of the planets. This mechanical system introduced the geocentric theory. This theory stated that the sun, moon, and stars all revolved around the earth. 
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21 h 52 m, 31 dic 370 año aC
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 ~ 2398 years ago