main sequence, red giant, horizontal branch, asymptotic giant, white dwarf
-energy source: H burning core, H burning shell, He core + H shell, He shell- H shell, none!
similar stages as low mass initally- main sequence, red giant, horizontal branch, super giant
-additional stages as even heavier elements are used as fuel (Ne, O, Si) up to Fe
-end life: burn H through Si in successive cores, build up massive iron core (collapse and core bounce)
-supernova explosion, main sources of heavy elements