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.
Tuesday, October 12, 2010
Astronomical unit
An astronomical unit (AU) is the distance from the Earth to the Sun. One AU is approximately 93 million miles.
1 comment:
or 150 million kilometres in the decimal metric system.
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