3. What are the stages ? 1. Nebula 2a.Main Sequence 3a.Red Giant 4a.Planetary Nebula 5a. White Dwarf 6a.Black Dwarf 2b.Main Sequence 3b.Red Supergiant 4b.Supernova 5b.Neutron Star or 5b.Black Hole a: Low Mass Star b: High Mass Star
4. Compared to a Human Life Span Graphic Courtesy of: http://aspire.cosmic-ray.org/labs/star_life/starlife_main.html