Nebula

protostar

click to edit

main sequence star

super massive main sequence image

brown dwarf

super giant image

supernova

neutron star

black hole

red giant

white dwarf

image

image

image

image

image

image

image

image

image

Fusion has not started yet.

Fusion never starts

Fusion starts H to HE

Fusion ends

Fusion starts H to HE

Fusion starts heavier to iron

Fusion ends