List of IllustrationsPrefaceNote on Editions 1: Clavius's Astronomical Work and Life 2: Jesuit Mathematics and Ptolemaic Astronomy 3: The Defense of Ptolemaic Cosmology 4: The Rival Cosmologies 5: Cosmological Debate and the Rebuttal of Copernicus 6: Strains on Ptolemaic Cosmology, Inside and Out 7: Galileo, Tycho, and the Fate of the Celestial SpheresConclusionNotesBibliographyIndex