Autolycus of Pitane (ca. 360 BC—d. ca. 290 BC) was a Greek astronomer, mathematician, and geographer. He was born in Pitane, a town of Aeolis, in Asia Minor. His works were probably completed in Athens between the years 335 BC and 300 BC. Autolycus' surviving works include a book on spheres (called "On the Moving Sphere") and another on the rising and setting of celestial bodies. "On the Moving Sphere" is believed to be the oldest mathematical treatise from ancient Greece that is completely preserved.