Article ID: CBB227759113

Assumptions behind Ptolemy’s Proof of the Earth’s Centrality (2018)

unapi

In his Almagest, Ptolemy provides an astronomical proof to establish the Earth’s centrality. In this paper, I offer a complete survey of this proof, present the main features of Copernican and Galilean heliocentric responses, and elucidate the meaning of some concepts involved in it. I argue that historical analysis allows us to state that the success of Ptolemy’s proof depended on some assumptions that were hidden in the meaning of some fundamental astronomical concepts, an issue that historians of astronomy usually neglect.

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Authors & Contributors
Ragep, F. Jamil
Timberlake, Todd
Wallace, Paul
Enrico Massaro
Nikfahm Khubravan, Sajjad
Vesel, Matjaž
Concepts
Astronomy
Heliocentrism
Geocentrism
Cosmology
Celestial mechanics
Solar system; planets
Time Periods
Ancient
Renaissance
17th century
Early modern
Medieval
16th century
Places
Greece
Lisbon (Portugal)
Portugal
Rome (Italy)
Institutions
Jesuits (Society of Jesus)
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