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.
Friday, May 10, 2013
Galactic year
A galactic year is the time it takes for the Solar System to orbit once around the Milky Way galaxy. This is approximately 230 million years.
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