Compiled by a team of experts, this textbook has been designed for elementary university courses in astronomy & astrophysics. It starts with a detailed discussion of our nearest star, the Sun, & describes how solar physicists have come to understand its internal workings. It then considers how astronomers go about studying the basic physical properties & life-cycles of more distant stars, & culminates with a discussion of the formation of exotic objects such as neutron stars & black holes. Written in an accessible style that avoids complex mathematics, & illustrated in colour throughout, this book is suitable for self-study & will appeal to amateur astronomers as well as undergraduate students. It contains numerous helpful learning features such as boxed summaries, student exercises with full solutions, & a glossary of terms. The book is also supported by a website hosting further teaching materials.