black dwarf
Eventually, yes. A mid-size star becomes a white dwarf, which eventually cools to become a black dwarf.
At the mass of the Sun, it will become a white dwarf - and when that one cools down, eventually a black dwarf.
A white dwarf star is a star that has burned off all of its helium and hydrogen fuel, but which is still hot. After it cools off (which would theoretically take hundreds of billions of years), it would become a black dwarf.
the next stage of a white dwarf is the black dwarf which is form when the degenerate electron slowly cools down by thermal radiation but the time required for a white dwarf to become a black dwarf is bigger than the current age of universe so the evidence of a black dwarf isn't found yet
A white dwarf could not become a red dwarf. A white dwarf is a remnant of a dead star. A red dwarf is a star with a very low mass.
A black dwarf.
No in the life cycle of a star, a white dwarf can cool and become a black dwarf
No. It will become a white dwarf in about 7.5 billion years time.
No. After the sun becomes a white dwarf it will eventually cool to become a black dwarf.
The radius will not change because a white dwarf is made of electron degenerate matter, so temperature does not affect pressure or volume.
A brown/black dwarf.
A black dwarf.