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Khan Academy: White and Black Dwarfs
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Organization: Khan Academy
Speaker: Khan Academy
Speaker: Khan Academy
White dwarfs are thought to be the final evolutionary state of all stars whose mass is not high enough to become a neutron star—over 97% of the stars in our galaxy. A black dwarf is a hypothetical stellar remnant, created when a white dwarf becomes sufficiently cool to no longer emit significant heat or light. Since the time required for a white dwarf to reach this state is calculated to be longer than the current age of the universe (13.7 billion years), no black dwarfs are expected to exist in the universe yet, and the temperature of the coolest white dwarfs is one observational limit on the age of the universe.
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All Comments (1)
9 months ago
shaggy
im an astronomy enthusiast, but never heard of black dwarf's. My whole afternoon is day is shot now.