Despite its popular association today with magic, astrology was once a complex and sophisticated practice, grounded in technical training provided by a university education. The Crown and the Cosmos examines the complex ways that political practice and astrological discourse interacted at the Habsburg court, a key center of political and cultural power in early modern Europe. Maximilian I employed astrology as a political tool to gain support for his reforms and to reinforce his own legitimacy as well as that of the Habsburg dynasty. With this book, Darin Hayton analyzes the various rhetorical tools astrologers used to argue for the nobility, antiquity, and utility of their discipline, and how they strove to justify their “science” on the grounds that through its rigorous interpretation of the natural world, astrology could offer more reliable predictions.