Protostar is the earliest phase of stars. It is still getting mass from its molecular cloud.Send me!
Main Sequence Star is the 4th phase of stars, where the star releases energy and then stopping it more from addition and then it shines.Send me!
Red Giant is the 7th phase of stars, where the core is hot enough to fuse helium, forming carbon, and the star does not shine much.Send me there!
Planetary Nebula is one of the final phases of stars, formed by the shell of gas around the red giant.Send me!