Between Copernicus and Galileo is the story of Christoph Clavius, the Jesuit astronomer and teacher whose work helped set the standards by which Galileo's famous claims appeared so radical, and whose teachings guided the intellectual and scientific agenda of the Church in the central years of the Scientific Revolution.

Though relatively unknown today, Clavius was enormously influential throughout Europe in the late sixteenth and early seventeenth centuries through his astronomy books—the standard texts used in many colleges and universities, and the tools with which Descartes, Gassendi, and Mersenne, among many others, learned their astronomy. James Lattis uses Clavius's own publications as well as archival materials to trace the central role Clavius played in integrating traditional Ptolemaic astronomy and Aristotelian natural philosophy into an orthodox cosmology. Although Clavius strongly resisted the new cosmologies of Copernicus and Tycho, Galileo's invention of the telescope ultimately eroded the Ptolemaic world view.
By tracing Clavius's views from medieval cosmology the seventeenth century, Lattis illuminates the conceptual shift from Ptolemaic to Copernican astronomy and the social, intellectual, and theological impact of the Scientific Revolution.

These selections from Le système du monde, the classic ten-volume history of the physical sciences written by the great French physicist Pierre Duhem (1861-1916), focus on cosmology, Duhem's greatest interest. By reconsidering the work of such Arab and Christian scholars as Averroes, Avicenna, Gregory of Rimini, Albert of Saxony, Nicole Oresme, Duns Scotus, and William of Occam, Duhem demonstrated the sophistication of medieval science and cosmology.

Once upon a time, the universe was much simpler: before our modern understanding of an infinite formless space scattered with pulsating stars, revolving planets, and mysterious black holes, the universe was seen as a rigid hierarchical system with the earth and the human race at its center. Medieval Views of the Cosmos investigates this worldview shared by medieval societies, revealing how their modes of thought affect us even today.

In the medieval world system—inherited by Christians and Muslims from the Greeks and Romans, and modified by their own religious tenets—spheres bearing the planets and stars wheeled around the earth, and at every level there was a moral lesson for humanity and a satisfying metaphor for the nature of God. The authors of this volume explain how the medieval view of the universe was harmonious on theological and practical levels, providing answers to the most puzzling of questions.

Medieval Views of the Cosmos is an engaging and beautifully illustrated introduction to a world where every moment was a theater of human drama directed by the hand of God.