24 giug 199 anni - Geocentric model Ptolemaic model

Descrizione:

Although the basic tenets of Greek geocentrism were established by the time of Aristotle, the details of his system did not become standard. The Ptolemaic system, developed by the Hellenistic astronomer Claudius Ptolemaeus in the 2nd century AD finally standardised geocentrism. His main astronomical work, the Almagest, was the culmination of centuries of work by Hellenic, Hellenistic and Babylonian astronomers.

https://en.wikipedia.org/wiki/Geocentric_model#Ptolemaic_system

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