Astronomy is one of the oldest sciences, and one which has repeatedly led to fundamental changes in our view of the world. This book covers the history of our study of the cosmos from prehistory to a survey of modern astronomy and astrophysics. It does not attempt to cover everything, but deliberately concentrates on the important themes and topics, including stellar astronomy in the seventeenth and eighteenth centuries--the source of many important concepts in modern astronomy--and the Copernican revolution, which led to the challenge of ancient authorities in many areas other than astronomy. This is an essential text for students of the history of science and for students of astronomy who require a historical background to their studies.