My trivia and facts on the Universe. Asteroids, black holes, distances, galaxies, light, Mars rovers, Moon landings, stars, Titan, Voyager program, and other Universe trivia and facts.
Thursday, May 6, 2010
A black dwarf is when a white dwarf cools enough that it no longer emits much heat or light. Since the Universe is approximately 13.7 billion years, no black dwarfs are thought to exist yet, since white dwarfs can still emit heat.