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Compact objects are often the endpoints of stellar evolution and, in this respect, are also called stellar remnants. They can also be called dead stars in public communications. The state and type of a stellar remnant depends primarily on the mass of the star that it formed from.
Diagram of stellar evolution, showing the various stages of stars with different masses. A black dwarf is a theoretical stellar remnant, specifically a white dwarf that has cooled sufficiently to no longer emit significant heat or light.
Any stars in the universe can collide, whether they are "alive", meaning fusion is still active in the star, or "dead", with fusion no longer taking place. White dwarf stars, neutron stars , black holes , main sequence stars , giant stars , and supergiants are very different in type, mass, temperature, and radius, and accordingly produce ...
The white dwarf, called WD 0816-310, is an Earth-size remnant of a star that was once like our sun but larger. The stellar object acquired a noticeable dark mark on its surface, which turned out ...
Nemesis is a hypothetical red dwarf [1] or brown dwarf, [2] originally postulated in 1984 [3] to be orbiting the Sun at a distance of about 95,000 AU (1.5 light-years), [2] somewhat beyond the Oort cloud, to explain a perceived cycle of mass extinctions in the geological record, which seem to occur more often at intervals of 26 million years.
The researchers believe the flares may have originated in a cluster of old stars orbiting the dead but "extremely luminous" galaxy – located 2 billion light-years from Earth and weighing more ...
The first Death Star's construction is the subject of Michael Reaves and Steve Perry's novel Death Star (2007), [44] which depicts the many politics and hidden agendas behind the massive project, from its construction up until its final destruction.
Stars are not eternal; they are dying in large explosions called supernovas. ... Dead stars called white dwarfs may be the key to understanding the cosmos. 77: 6