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Philolaus of Croton
471 BC – 386 BC
Plato
430 BC – 348 BC
Eudoxus of Cnidus
411 BC – 356 BC
Aristotle
385 BC – 323 BC
Aristarchus of Samos
311 BC – 231 BC
Eratosthenes of Cyrene
277 BC – 196 BC
Hipparchus
191 BC – 121 BC
Claudius Ptolemy
AD 89 – AD 167