light-year :

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light-year


  • n  the distance that light travels in a vacuum in 1 year; 5.88 trillion miles or 9.46 trillion kilometers

  • In addition, Hewish estimated that the fast-pulsing source is only 50 light-years away, compared with the 200-light-year distance he calculated for pulsar 1.
  • Each light-year is about 6 trillion miles.
  • When Hubble looks out into a billion-light-year sphere of space with the 200-inch's doubled range of penetration, he may not find eight times as many nebulae as in the 500 .
News & Articles

  • Astronomers find blue planet outside solar system
    LONDON (AP) — Astronomers have for the first time managed to determine the color of a planet outside our solar system, a blue gas giant 63 light-years away.
    July 12, 2013 - Associated Press via Yahoo! News
  • Scientists find blue planet in another solar system
    Posted by Scott T. Smith / CBS12 News LONDON (AP) â Astronomers have for the first time managed to determine the color of a planet outside our solar system, a blue gas giant 63 light-years away. Using the Hubble Space Telescope, an international team said the planet known as HD 189733B would look like a deep blue dot if viewed up close. ...
    July 12, 2013 - WPEC CBS12 West Palm Beach
  • Astronomers make landmark planet color discovery
    LONDON—Astronomers have for the first time managed to determine the color of a planet outside our solar system, a blue gas giant 63 light-years away.
    July 12, 2013 - Pioneer Press
Quotes

  • David Spergel in MSNBC
    We find that density fluctuations on the 1 [billion] to 10 billion light-year scale are larger than density fluctuations on the 100 million light-year scale,Spergel said. "That is just what inflation theory predicts."

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