Ptolemy’s Science of the Stars in the Middle Ages Edited by David Juste, Benno van Dalen, Dag Nikolaus Hasse, and Charles Burnett Claudius Ptolemy (c. 100-170 ad) is one of the most influential scholars of all time. While he is also…
A Note on the Indian Planetary Exaltations and their Greek-Language Sources, by Martin Gansten A close examination of the lists of planetary exaltations given by two of the earliest known Sanskrit authors on horoscopic astrology – Mīnarāja and Sphujidhvaja –…
Book: Contingency and Natural Order in Early Modern Science This volume considers contingency as a historical category resulting from the combination of various intellectual elements – epistemological, philosophical, material, as well as theological and, broadly speaking, intellectual. With contributions ranging from…
The Abraham Ibn Ezra–Peter of Limoges Astrological-Exegetical Connection The article enlarges the circle of the Latin admirers of Abraham Ibn Ezra (ca. 1089–ca. 1161) to include Peter of Limoges (second half of the thirteenth century), who spent most of his…
Origins and Transmission of Liber Abraham Iudei de Nativitatibus The Liber Abraham Iudei de Nativitatibus is a Latin astrological treatise that has no surviving Hebrew counterpart, and whose affiliation with Abraham Ibn Ezra (ca. 1189-ca. 1160) is unclear. Till now De nativitatibus has been…
The medieval Moon in a matrix: double argument tables for lunar motion Astronomers have always considered the motion of the Moon as highly complicated, and this motion is decisive in determining the circumstances of such critical celestial phenomena as eclipses.…