White Dwarf

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  • White Dwarf Star Measurements Bring Milky Way Into Focus

    latimes.com 1 day, 11 hours ago

    A study uses a new technique for calculating the masses and ages of old stars based on the masses of the white dwarfs they have become.White dwarf stars are dying stars , burned-out cinders that have exhausted the hydrogen that sustains them. But scientists may soon count on these stellar flameouts to unravel the history of the Milky Way.

  • Solar System's Death Glimpsed In White Dwarf Stars

    wired.com 4 weeks ago

    Four dead planetary systems, each lit by the burned-out core of a star that once resembled the sun, provide a harrowing forecast for Earth's eventual demise.

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via Wikipedia
A white dwarf, also called a degenerate dwarf, is a small star composed mostly of electron-degenerate matter. They are very dense; a white dwarf's mass is comparable to that of the Sun and its volume is comparable to that of the Earth. Its faint luminosity comes from the emission of stored thermal energy. In January 2009, the Research Consortium on Nearby Stars project counted eight white dwarfs among the hundred star systems nearest the Sun. The unusual faintness of white dwarfs was first recognized in 1910 by Henry Norris Russell, Edward Charles Pickering, and Williamina Fleming;, p. 1 the name white dwarf was coined by Willem Luyten in 1922.
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