About the Author

Thomas Wm. Hamilton is a retired astronomer who worked for three years on the Apollo Project. He taught astronomy for 32 years, and worked in several planetariums. This is his fifth book on an astronomical topic since his retirement. He is a Fellow of the International Planetarium Society. Asteroid 4897 was named Tomhamilton in his honor by the International Astronomical Union. He lives on Staten Island, New York.