Stellar Evolution

Stellar evolution is the way in which stars change over time. Stars are born, live their lives and then die, and their evolution is governed by the balance of pressure and energy that is generated within them. As stars age, they can gain or lose mass, become brighter or fainter, and transform from one type of star to another. Stellar evolution is important for understanding the physics of stars and how they form, live and end their lives in various ways. It also has implications for the formation of planets, the evolution of galaxies, and the creation of heavy elements that form the basis of life.