Light-year
From Tardis Wiki, the free Doctor Who reference
A light-year is a unit of measurement used to measure distance, usually the distance that light travels over the course of an Earth year. (SJA: Eye of the Gorgon)
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This page was last edited on 29 September 2008, at 13:29 (UTC).Last edited: 13:29, 29 September 2008 (UTC)
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