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A shell of gas from stars like our sun, at the end of their lifetime, there is no materials and they need to form a new star
main sequence to red star
The star increases in size because as the core shrinks the outer layer expands, as it expands the outer layer decreases the gravity forming to explode away from the core
also called the super nova remmant, a giant cloud of gas and dust that has exploded away from the super nova
proto star to main sequence
as gravity pulls more in the pressure increases, they cause an increase in temp, when the temp becomes very hot the atoms of hydrogen move fast enough to collide and fuse, the nuclear fusion begins and a new star is born
a low mass star that has ran out of hydrogen, and no longer produces heat by nuclear fusion
the remaining core of the most massive super giant that has exploded the gravity in the core is so strong that even light can not escape from it
the core of a low mass star that has exhausted all of its nuclear fusion and has collapsed to a very small size, the outer layers of a star have been blown off
a very large star, which results after helium fusion changes in the core of a very massive star
nebula to a proto star
graviity pulls the element in to a cloud of gas, together to form a new star nursey
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