What do yu mean by stellar evolution.....?

1.	What do yu mean by stellar evolution.....?
Answer» Stellar evolution is the process by which a star changes over the course of time. Depending on the mass of the stars, its lifetime can range from a few million years for the most massive to trillions of years for the least massive, which is considerably longer than the age of universe. Stellar evolution is the process in which the forces of pressure (gravity) alter the star. With these forces acting upon stars, their characteristics change dramatically over the period of their existence.

Discussion