Light-year
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Revision as of 19:10, 5 October 2011 by Daedalus-01 (Talk | contribs)
A light-year is a unit of measurement to describe interstellar distances, equal to 9,460,730,472,580.8 kilometers, the distance a beam of light will travel in one Earth (Julian) year if left uninterrupted. It is also equal to 0.3066 pc.