Galileo and the Almagest c.1589���1592

<p>This book offers a groundbreaking exploration of Galileo Galilei���s engagement with the <em>Almagest</em> Claudius Ptolemy���s second-century scientific work on the motions of stars and planetary paths. Contrary to the belief that Galileo had little interest in Ptolemaic astronomy the author investigates whether Ptolemy influenced Galileo���s shift to Copernicanism the theory that Earth and all other planets revolve around the Sun. This inquiry is pursued through a detailed examination of Galileo���s early writings on motion namely the so-called <em>De motu antiquiora</em> (c. 1589���1592). By contextualizing Galileo���s initial reception of Ptolemy the book reveals a fascinating historical backdrop highlighting how the Almagest was intended to be read and studied in Galileo���s milieu during the last decades of the sixteenth century. The author challenges the conventional ���Ptolemaic-Aristotelian��� label by showing that early Galileo adhered to a Ptolemaic yet non-Aristotelian cosmology supported by an Archimedean-like rationale. Additionally the book underscores the often-overlooked impact of Theon of Alexandria���s commentary on the Almagest in the sixteenth- and seventeenth-century reception of Ptolemy suggesting it as one of Galileo���s potential sources. Offering valuable insights for historians of science and early modern astronomy this book illuminates Galileo���s intricate relationship with astronomical and philosophical ideas emphasizing the need to re-examine his intellectual journey within a nuanced historical framework.</p>