They will die.
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Actually it is more correct to say they get cold.
Only when the temperature reaches absolute zero do the atoms stop moving.
But are they dead? If you warm them back up will they start moving and become alive again?
When the outward force of pressure wins over gravity in an old star, the star will expand and cool, becoming a red giant. This process occurs as the star exhausts its nuclear fuel and transitions to a different phase of stellar evolution.
When a star tuns red it ceases to fuse hydrogen in its core and starts to fuse other elements (notably helium). When this happens the core shrinks but gets much hotter and the outer envelope of the star expands. This means that while the star is pumping out more energy this is happening over a wider area of surface so the temperature of any one area of the stellar surface is lower than it was before - and the star looks red.
it gets dark
That type of star is called a supernova. Supernovae occur when a star reaches the end of its life cycle and undergoes a catastrophic explosion, releasing a tremendous amount of energy and increasing its brightness significantly for a brief period of time.
Neutron stars do not have fuel. A neutron star is a remnant of a star that has already died.
it gets wrinklely
Nothing but when the star explodes it turns into a blackhole
it gets old and dies
it gets bad
It gets thrown away.
When a star is old and expands it turns into a black hole.
All of them, that's how a star gets to be "old" ... it converts its hydrogen into helium.
they faint
pay it
they have a baby to a dirty old man...
it gets wet
The collapses star gets squeezed by collapses gas and turns into a black hole.