We learn of the the black dwarf, the final stage in a death of a low.pdf

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We learn of the the black dwarf, the final stage in a death of a low mass star. What happens to a black dwarf after it cools to nearly zero Kelvin over trillions of years? Is there any other stage, or does it just remain as an Earth sized burned out ember for eternity? Solution It needs to be understood here that black dwarfs are essentially theoretical. The age of the universe is around 14 billion years which happens to be too short a time for a white dwarf to emit all of its heat out. However, theoretically when this would happen, the white dwarf would reach a stage when its temperature would be down to a level that the radiation coming out of it would become same as the background cosmic radiation and will become invisible to us. That is, it will continue to cool down until it reaches the temperature of its surrounding, a cold mass with nothing to emit or absorb, and would remain so..

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