Predicted Death of Stars Based on their Mass.
Our Star, Arcturus, used to be an average sized star similar to our sun. Arcturus has already been through it's birth and main sequence and it is beginning to die. It is in the Red Giant phase so it has expanded since it was in the main sequence. It is running low on hydrogen so it is trying to fuse helium making the energy output more powerful than the gravitational force. It's next phase is to turn into a planetary nebula where basically all of it's mass will float off into space. Then it will just be left with the core and it will be considered a white dwarf. The white dwarf will eventually lose all of it's energy and become a black dwarf.