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Light year   /laɪt jɪr/   Listen
Light year

noun
1.
The distance that light travels in a vacuum in 1 year; 5.88 trillion miles or 9.46 trillion kilometers.  Synonym: light-year.






WordNet 3.0 © 2010 Princeton University








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"Light year" Quotes from Famous Books



... on full acceleration fifteen hours ago, when we passed Neptune, and we have covered thirty billion miles—three hundred times as far as from the moon to the sun, but only one half of one per cent of a light-year." ...
— Out Around Rigel • Robert H. Wilson

... The astronomical light-year—that is to say, the distance which light travels in a year—was one of the things which he loved to contemplate; but he declared that no two authorities ever figured it alike, and that he was going to figure it for himself. I came ...
— Mark Twain, A Biography, 1835-1910, Complete - The Personal And Literary Life Of Samuel Langhorne Clemens • Albert Bigelow Paine

... system. It's stationed a half light-year away, where it has a legal right to be. Nothing to worry about as such. It's just a heavy armed frigate, which is the limit Tranest is allowed to build. Since it's Lyad's private boat, I imagine it's been souped up with everything they could throw in. Anyway, the fact that she sent ...
— Legacy • James H Schmitz

... fifth-order projector rays, it was as plainly visible as though it were stationary. Lining up the path of the projectile accurately, he then projected himself forward in that exact line, with a flat detector-screen thrown out for half a light year upon each side of him. Setting the controls, he flashed ahead, the detector stopping him the instant that the invisible barrier encountered the power-plant of the exploring raider. An oscillator sounded a shrill and rising note, and Seaton slowly shifted his controls until he stood ...
— Skylark Three • Edward Elmer Smith

... after light year they raced toward the distant base. They reached it in two hours, and Arcot saw them from a distance sink to the various worlds. There were twelve gigantic worlds, each far larger than Jupiter of Sol, and larger than ...
— Invaders from the Infinite • John Wood Campbell



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