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Which is an example of a black dwarf in our galaxy?

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AUrsa Major-B
BA black hole
CSirius-B
DNone, so far it is a theoretical construct

Correct Option: 4  

Explanation:
None, so far it is a theoretical construct
A black dwarf is the name given to the end state of a white dwarf, when all its heat and light have been radiated. The length of time it would take for a white dwarf to reach this state is calculated to be longer than the current age of the universe, and none have been identified. Sirius-B is a white dwarf; Ursa Major-B is a brown dwarf.
posted Feb 5 by Deepak Chitragar

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