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the initial mass of dust and gas of a star
main sequence star
the long stable period that lasts billions of years
When hydrogen begins to run out in a small star
Red super giant
When hydrogen begins to run out in a big star
when a small-medium star ejects its outer layer of dust and gas
The hot dense solid core left behind after a planetary nebula
A white dwarf which has cooled down and eventually disappears
when a star explodes forming elements heavier than iron and ejecting them into the universe
The very dense core left after a supernova
if a neutron star is big enough it will form a...