In red-giant stars with mass less than 1.25 Sun mass {Chandrasekhar limit, white dwarf}, as outer layers expand away by nova explosions, Earth-size star {white dwarf} remains. Electron-degeneracy pressure counterbalances gravity, so atoms do not collapse. White dwarfs are 5% to 10% of all stars.
Physical Sciences>Astronomy>Star>Kinds
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Date Modified: 2022.0224