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Text File  |  1992-09-03  |  229b  |  8 lines
  1. A light year (LY) is used to measure very
  2. large distances in space, light travels at a
  3. speed of 299,792.458km per second, this is
  4. equivilent to 9,460,500,000,000km or 
  5. 5,878,000,000,000miles every year.
  6.  
  7. Subject by: Malcolm Pett
  8.