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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