Kepler S Physical Astronomy

<i>Keplers Physical Astronomy</i> is an account of Keplers reformulation of astronomy as a physical science, and of his successful use of (incorrect) physics as a guide in his astronomical discoveries. It presents the only reliable account of the internal logic of Keplers so-called first and second laws, showing how and to what extent Kepler thought he had derived them from his physical principles. It explains for the first time Keplers attempt to use an obscure discovery of Tycho Brahe to unify and confirm all of his own physical theories. It also describes the intricate (and neglected) theory which Kepler developed to account for the additional anomalies needed for the theory of the moon.