A star system consisting of two stars orbiting around their common center of mass. Binary stars are very common, with more than half of all star systems being binaries or multiples. They are important for determining stellar masses.
A massive, luminous sphere of hot gas held together by gravity, generating energy through nuclear fusion. Stars range fr...
A stellar core remnant of electron-degenerate matter, Earth-sized but with a mass comparable to the Sun. The final state...
The collapsed core of a massive star after a supernova, with 1.4-2 solar masses in a sphere about 20 km across. Incredib...
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