• Emission nebula - Wikipedia, the free encyclopedia

    en.wikipedia.org/wiki/Emission_nebula An emission nebula is a nebula formed of ionized gases that emit light of various colors. ... Among the several different types of emission nebulae are H II regions, ...
  • APOD Index - Nebulae: Emission Nebulae

    apod.nasa.gov/apod/emission_nebulae.html Editor's choices for the most educational Astronomy Pictures of the Day about emission nebulae: APOD: 2005 September 30 - IC 1396 H-Alpha Close-Up
  • Emission Nebula | COSMOS

    astronomy.swin.edu.au/cosmos/E/Emission+Nebula Emission nebulae are clouds of ionised gas that, as the name suggests, emit their own light at optical wavelengths. Their mass generally ranges from 100 to 10,000 ...
    • Types of Nebulae - The Nine Planets

      astro.nineplanets.org/twn/types.html Dark nebulae are also often seen in conjunction with reflection and emission nebulae. A typical diffuse nebula is a few hundred light-years across.
    • Emission-nebula | Define Emission-nebula at Dictionary.com

      dictionary.reference.com/browse/emission-nebula noun, Astronomy. 1. a bright diffuse nebula that emits light as a result of ionization of its gas atoms by ultraviolet radiation, as the Orion Nebula, planetary ...
    • National Optical Astronomy Observatory: Emission Nebulae

      www.noao.edu/image_gallery/emission_nebulae.html Emission Nebulae (page 1) Emission nebulae are glowing clouds of interstellar gas which have been excited by some nearby energy source, usually a very hot star.
    • Emission nebula - Sun

      www.sun.org/encyclopedia/emission-nebula An emission nebula is a cloud of interstellar gas and dust that emits light in different colours. There are several different types of emission nebulae with diverse ...
    • emission nebulae | Astronomy.com

      www.astronomy.com/tags/emission-nebulae Astronomy.com is for anyone who wants to learn more about astronomy events, cosmology, planets, galaxies, asteroids, astrophotography, the Big Bang, black holes ...
    • Emission nebula - definition of emission nebula by The Free ...

      www.thefreedictionary.com/emission+nebula NGC 2035 is an HII region, or emission nebula, consisting of clouds of gas that glow due to the energetic radiation given off by young stars.
    • Classifications of Objects in Space: Emission Nebulae

      futurism.com/classifications-of-objects-in-space-part-1-emission-nebulae-2 When talking about these nebulae, you’ll hear the term X # region, such as the H II region (pronounced H-2) I mentioned earlier. Basically, these describe specific ...