White dwarf
Videos
A white dwarf is a very dense type of star: in an Earth-sized volume, it packs a mass that is comparable to the Sun. A white dwarf radiates light from residual heat and eventual crystallization, not f
Artist's impression of debris around a white dwarf
Comet falling into white dwarf (artist's impression)
Artist’s impression of WD 1856b
Artist's impression of the WD J0914+1914 system
Sirius B
Videos
Sirius B is a white dwarf star and the faint companion to Sirius A, the brightest star in Earth's night sky, located in the constellation of Canis Major or the "Greater Dog".
The evolution of intermediate-mass stars (0.8 to eight times the mass of the Sun)
Artistic representation of Sirius star system
Artistic representation of the sizes of Sirius B and Earth