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.
Monday, February 21, 2011
Light speed
The speed of light is approximately 186,000 miles per second. This is how far light travels each second. A light year is how far light travels in a year.
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