A white dwarf, also called a degenerate dwarf, is a stellar core remnant composed mostly of electron-degenerate matter. A white dwarf is very dense: its mass is comparable to that of the Sun, while its volume is comparable to that of Earth. Image credit: NASA’s Goddard Space Flight Center/S. Wiessinger

Related channels: NOVAE, STARS, THE SUN, PULSARS, QUASARS, NEUTRON STARS, BROWN DWARFS