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.
after a nova star becomes bright it turns into a dwarf and explodes.
it retired or expired
I am pretty sure it becomes a giant if I'm not mistaken.
It becomes a white dwarf.
After a star burns up all it's hydrogen, it becomes a red giant.
When a star burns up all of its hydrogen,it becomes red in color.As hydrogen is the fuel for star and it will burst after it.
When a star burns up all of its hydrogen,it becomes red in color.As hydrogen is the fuel for star and it will burst after it.
The mass of the star.
after a nova star becomes bright it turns into a dwarf and explodes.
it retired or expired
A red giant is when a star becomes very large. A super red giant is when a star becomes very extremely large. People think that in a few billion years, our sun will become a red giant and swallow up earth.
first its called the main sequence star like the sun then it becomes a red giant then it becomes a red super giant and if it is huge a hyper-giant like VY Canis Majoris (largest star known) then it explodes and it becomes a planetary nebula then it becomes a white dwarf
I am pretty sure it becomes a giant if I'm not mistaken.
becomes dark red
the light becomes red :-P
A red main sequence star would be a red dwarf or a branch red giant. To be on the main sequence, you have to have hydrogen nuclear fusion.
It becomes a white dwarf.