The changes that a star goes through is determined by how much mass the star has
Types of life cycles
Average star and massive star
Stellar nebula
All stars begin in a cloud of gas and dust called a stellar nebula. Gravity will cause the nebula to contract. The nebula will break into smaller pieces these pieces will eventually form stars
Protostars
After a few million years, the gas forms into a disc with a small dense core. Approx 1500K
