Anticipations of Copernicus's Models For Planetary Orbits
Mathematical techniques developed in the 13th-14th centuries by the Muslim astronomers, Mo'ayyeduddin Urdi, Nasir al-Din al-Tusi, and Ibn al-Shatir for geocentric models of planetary motions closely resemble some of those used later by Copernicus in his heliocentric models. This has led some scholars to argue that Copernicus must have had access to some yet to be identified work on the ideas of those earlier astronomers. However, no likely candidate for this conjectured work has yet come to light, and other scholars have argued that Copernicus could well have developed these ideas independently of the Islamic tradition. Copernicus also discusses the theories of Al-Battani and Averroes in his major work.
Read more about this topic: Copernican Heliocentrism
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