emission nebula

English

Noun

emission nebula (plural emission nebulae or emission nebulas)

  1. (astronomy) A nebula composed of ionized gases which produce visible light (as distinct from a reflection nebula, which reflects the light produced by neighboring stars).
    • 2000 Oct. 12, Prof. Daniel Styer, "Nebulae," Oberlin College Physics Department (retrieved 7 April 2014):
      The Orion nebula is an emission nebula—it glows with its own light.
    • 2005 June 5, Suzanne MacNeille, "On a Dig or Through a Telescope, You Just Might Learn Something," New York Times (retrieved 7 April 2014):
      Kitt Peak National Observatory, in Arizona, 56 miles southwest of Tucson, offers a rare opportunity to spend an entire night looking through powerful telescopes at galaxies, planetary emission nebulae and star clusters.

Translations

References
This article is issued from Wiktionary. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.