This book was first published in 2007. Variable stars are those that change brightness. Their variability may be due to geometric processes such as rotation, or

This book surveys our understanding of stars which change in brightness because they pulsate. Pulsating variable stars are keys to distance scales inside and be

Observing variable stars is one of the major contributions amateur astronomers make to science. There are 36,000 variable stars listed in the General Catalogue

This book contains everything you need to know about variable stars -- stars whose brightness varies noticeably over time. The study of variable stars has been

Observing variable stars is one of the major contributions amateur astronomers make to science. There are 36,000 variable stars listed in the General Catalogue