Which statement is true about black dwarfs?
A.None currently exist in the universe.
B.They are very hot and massive.
C.They burn brightly for only a few weeks or months.
D.They form after supernova explosions.

Question

Which statement is true about black dwarfs?
A.None currently exist in the universe.
B.They are very hot and massive.
C.They burn brightly for only a few weeks or months.
D.They form after supernova explosions.

anonymous · Answer

"A black dwarf is a white dwarf that has sufficiently cooled that it no longer emits significant heat or light. Because the time required for a white dwarf to reach this state is calculated to be longer than the current age of the universe (13.8 billion years), no black dwarfs are expected to exist in the universe yet" - wikipedia