Cloud of Stellar Dust and Gas
Protostar
Brown Dwarf
Sun-Like Star
Red Giant
Planetary Nebula
White Dwarf
Type 1aSupernova
BlackHole
NeutronStar
Type II Supernova
Blue Supergiant
Red Supergiant
Blue Giant
Red Dwarf
The dust and gas collapse and heat up
Much smaller than the Sun
Much larger than the Sun
Same size as the Sun
Somewhat smaller than
the Sun
Nuclear fusion consumes all the hydrogen
Material is ejected, creating a Filamentary shell surrounding a hot small star
A Star with the mass about 150 times
the mass of the Sun
Nuclear fuel is used up
Nuclear fuel is used up
Core Collapses
Core Collapses
Outer layers of the star are ejected
A Star with the mass about 100 times the mass of the Sun
The central star collapses
IF it is pushed over a limit of about 1.4 times the mass of
the Sun, it explodes
A Star more massive than ~10 Suns
STELLAR EVOLUTIONThe rate of evolution and the ultimate fate of a star depends on its mass.
National Aeronautics and Space Administration
www.nasa.gov
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