parsec

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"A mega-parsec is a million parsecs, and a parsec is about 3 light years.

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Definitions (3)

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  1. noun A unit of astronomical length based on the distance from Earth at which stellar parallax is one second of arc and equal to 3.258 light-years, 3.086 × 1013 kilometers, or 1.918 × 1013 miles.

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Examples (37)

  • A parsec is 3.26 light years. —  George Smoot on the design of the universe
  • In the Omega Twelve sector towards which those two ships traveled in parsec-gulping strides, Stephen Strang had temporarily banished the mystery of the little TSC two place scouter they picked up from his mind. —  Kenneth Bulmer - Worlds for the Taking
  • The parsec is the unit of distance used almost exclusively among astronomers. —  Analog February, 1971
  • Anime 27—29 ConFluence, Box 3681, Pittsburgh PA 15230. parsec-sff.org. Airport Doubletree. —  Asimov'sSF,August2007
  • "Hmmm," I wondered, "What's this 'parsec' thing everyone is talking about?" —  RubyCorner
 

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