This volume contains a clear and idiomatic English translation - the first ever - of The Heavens, along with an informative introduction, detailed notes, and technical diagrams. This important work will now be accessible to specialists in both ancient philosophy and science and to readers interested in the history of astronomy and cosmology but with no knowledge of ancient Greek.

The Heavens stands in the tradition of ancient philosophical and astronomical literature from the time of Plato and Aristotle to that of Ptolemy and is an excellent introduction to some basic principles of ancient astronomy. Its technical information includes demonstrations of a geocentric cosmology, measurements of the Earth's circumference and Sun's size, a brief account of planetary motion, descriptions of the Earth and its climatic zones, and accounts of lunar eclipses and phases.