Using fundamental physics the theory of stellar structure & evolution can predict how stars are born how their complex internal structure changes what nuclear fuel they burn & their ultimate fate This textbook is a stimulating introduction for undergraduates in astronomy physics & applied mathematics taking a course on the physics of stars It uniquely emphasises the basic physical principles governing stellar structure & evolution This second edition contains two new chapters on mass loss from stars & interacting binary stars & new exercises Clear & methodical it explains the processes in simple terms while maintaining mathematical rigour Starting from general principles this textbook leads students step-by-step to a global comprehensive understanding of the subject Fifty exercises & full solutions allow students to test their understanding No prior knowledge of astronomy is required & only a basic background in physics & mathematics is necessary