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

• 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 .
• 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.

• light year

News & Articles

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• 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

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• 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."