No. A white dwarf is a remnant of a dead star.
No in the life cycle of a star, a white dwarf can cool and become a black dwarf
No. A white dwarf is the remnant of a star in which fusion as stopped.
Yes there are a few more [See related link for more information].--- Main sequence stars -----Red dwarf Yellow dwarfBlue dwarf (hypothetical)--- Degenerate stars --------White dwarf Black dwarf (hypothetical)--- Sub stellar stars -------Brown dwarf.
Many stars are white dwarfs.
A white dwarf
A stars evolution. Our Sun will go yellow dwarf -> red giant -> white dwarf -> black dwarf.
Yes, some of the 20 nearest stars are white dwarfs. For example, Sirius B, the companion star to Sirius A, is a white dwarf. Among the 20 brightest stars, Sirius B is the only white dwarf.
No, the surface temperature of Betelgeuse is colder than the temperature of a white dwarf, the white dwarf is the hot core of a dead star. Also, red stars are always colder than white stars.
No, white dwarf stars do not undergo nuclear fusion like main sequence stars, including our Sun. White dwarf stars are the remnants of low to medium mass stars, and they use stored thermal energy to shine and gradually cool over time.
Since white dwarf, like all stars, are made up of plasma (ionized gas), they have no craters on their surfaces.
No, the sun is a main sequence star, not a white dwarf. White dwarfs are the remnants of smaller stars that have exhausted their nuclear fuel and collapsed. The sun will eventually evolve into a white dwarf in about 5 billion years.
A white dwarf is the remnant of a low to medium mass star.