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A white dwarf is a stellar core remnant composed mostly of electron-degenerate matter. A white dwarf is very dense: its mass is comparable to the Sun's, while its volume is comparable to Earth's. A white dwarf's low luminosity comes from the emission of residual thermal energy; no fusion takes place in a white dwarf.
25 de abr. de 2023 · White dwarfs are the hot, dense cores of dead stars that mark the final stage of evolution for most stars, including our sun. Learn how they are born, what they are made of, and how they can explode or fade away in this astronomy essentials article.
White dwarfs are stars that have burned up all of the hydrogen they once used as nuclear fuel. Fusion in a star's core produces heat and outward pressure, but this...
2 de may. de 2024 · Learn about the definition, size, mass, life cycles, and facts of white dwarf stars, the dense and compact remnants of intermediate- and low-mass stars. Find out how they are supported by degeneracy pressure, what is the Chandrasekhar limit, and how they evolve and cool down.
4 de mar. de 2022 · The cool, dim star at the center of the blue haze cloud is a white dwarf. The planetary nebula NGC 2452 is located in the southern constellation of Puppis. (Image credit: ESA/Hubble & NASA ...
Learn what a white dwarf is, how it forms, and how it cools over time. See images and videos of white dwarfs in globular star clusters and with possible Earth-like planets.
Learn how white dwarfs and neutron stars are formed from the death of stars, and how they affect the universe with their gravity, radiation, and chemistry. Explore the research topics and projects of Center for Astrophysics scientists on these compact objects.
