Ptolemy explicitly claims in the Almagest to have made 36 observations. For most of them, the date of the observation is determined by the kind of phenomenon observed, for example, the observation of a lunar eclipse or of ...

We trace the transmission of Ptolemy´s Almagest from the time of its composition to Arabic translations, Latin translations, and the Epitome of the Almagest by Peurbach and Regiomontanus. Along the way, Ptolemaic astronomy ...

The goal of this paper, both historical and philosophical, is to launch a new case into the scientific realism debate: geocentric astronomy. Scientific realism about unobservables claims that the non-observational content ...

The introduction of the equant point signified a major improvement in the history of planetary models. Thanks to its incorporation in ancient planetary hypotheses, Greek astronomy reached a higher degree of accuracy in its ...

There has been much debate surrounding the way in which Ptolemy handled the observations that are behind his planetary models. This article aims at presenting an interesting case of manipulation of observational data within ...

This article describes and makes available computed data for the major synodic events for the inner (Mercury, Venus) and outer (Mars, Jupiter, Saturn) planets for the time period -800 to 1650.