The Life Cycle of a Star
The stage before a star. Made of gas, dust, magnetic fields, and charged particles. Its actually just space.
The protostar is the star's version of the fetus. The protostar is trying to reach equilibrium, and become a star. If a protostar fails, it becomes a brown dwarf, and will never be a beautiful star.
The main sequence
This is the final stage of the star, and carbon fuses into oxygen.
A massive explosion when the star dies.