The most authoritative answer in 2024
-

-
Ethan Martinez——Works at the International Committee of the Red Cross, Lives in Geneva, Switzerland.
Because the length of time it takes for a white dwarf to reach this state is calculated to be longer than the current age of the universe (
approximately 13.8 billion years), it is thought that no black dwarfs yet exist. The oldest white dwarfs still radiate at temperatures of a few thousand kelvins.
read more >>
About “approximately 13.8 billion years、approximately 13.8 billion years、approximately 13.8 billion years”,people ask:
QuesHub is a place where questions meet answers, it is more authentic than Quora, but you still need to discern the answers provided by the respondents.