A black dwarf is a theoretical stellar remnant, specifically a white dwarf that has cooled sufficiently to no longer emit significant heat or light. Because the time required for a white dwarf to reach this state is calculated to significantly exceed the current age of the universe (13.79 billion years), no black dwarfs are expected to exist in the universe at the present time.
A black dwarf is a theoretical stellar remnant, specifically a white dwarf that has cooled sufficiently to no longer emit significant heat or light. Because the time required for a white dwarf to reach this state is calculated to significantly exceed the current age of the universe (13.79 billion years), no black dwarfs are expected to exist in the universe at the present time.
Source: Wikipedia "Black dwarf" · CC BY-SA 4.0
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