Horizons:_Exploring_the_Universe
Horizons: Exploring the Universe
Astronomy textbook
Horizons: Exploring the Universe is an astronomy textbook that was written by Michael A. Seeds and Dana E. Backman. It is in its 14th edition (as of 2019[update]), and is used in some colleges as a guide book for introductory astronomy classes. It covers all major ideas in astronomy, from the apparent magnitude scale, to the Cosmic Microwave Background Radiation, to gamma ray bursts.