Product Description: The book contends that the digression ending Simplicius In de caelo 2.12 is not a proper history of early Greek planetary theory, but a creative atempt to show that to accept Ptolemys planetary hypotheses one need not repudiate Aristotles argument that the cosmos is eternal.

Aestimatio provides critical, timely assessments of books published in the history of what was called science from antiquity to the early modern period in cultures ranging from Spain to India, and from Africa to northern Europe. The aim is to allow reviewers the opportunity to engage critically both the results of research in the history of science and how these results are obtained.Reviewers in volume 7 include Clemency Montelle with Kathleen M. Clark, Sara J. Schechner, Florian Mittenhuber, Richard Oosterhoff, Silvia Di Donato, Sabetai Unguru,Teun Tieleman, John Hannah, J. Lennart Berggren, Steffen Ducheyne, Steven J. Livesey, Cecilia Trifogli, Angelo Meriani, Stephan Heilen, and Paul T. Keyser, There is also a response by Gad Freudenthal and memorial notices by Stephen Menn and Teije de Jong.

Product Description: Aristotle's great ambition in his De caelo was to determine the nature and structure of the geocentric universe. This collection of essays addresses key epistemological and methodological issues raised by the numerous arguments that Aristotle offers.