stellar remnant; white dwarf that has cooled sufficiently that it no longer emits significant light
A black dwarf is a white dwarf star that has cooled down so much that it no longer gives off significant light or heat. This matters because it represents the final stage in the life cycle of stars like our Sun, though black dwarfs are believed to be extremely rare since the universe hasn't existed long enough for white dwarfs to cool completely.
AI-generated from the Wikipedia summary — may contain errors.
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. The temperature of the coolest white dwarfs is one observational limit on the universe's age.
The name "black dwarf" has also been applied to hypothetical late-stage cooled brown dwarfs – substellar objects with insufficient mass (less than approximately 0.07 M☉) to maintain hydrogen-burning nuclear fusion.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).