The Controversy on the Comets of 1618The appearance of three comets in the autumn of 1618 touched off a controversy of such proportions that its effects are still inextricably associated with some of the most dramatic events marking the dawn of our modern era. This volume contains the principal works, in English translation, that were published during the extended controversy between Galileo and the Jesuits over the nature of comets, concluding with a commentary by Johann Kepler. The