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  2. Emission nebula - Wikipedia

    en.wikipedia.org/wiki/Emission_nebula

    An emission nebula is a nebula formed of ionized gases ... Some of the most prominent emission nebulae visible from the northern celestial hemisphere are the North ...

  3. RCW Catalogue - Wikipedia

    en.wikipedia.org/wiki/RCW_Catalogue

    The RCW Catalogue (from Rodgers, Campbell & Whiteoak) is an astronomical catalogue of Hα-emission regions in the southern Milky Way, described in (Rodgers et al. 1960).It contains 182 objects, including many of the earlier Gum catalogue (84 items) objects.

  4. NGC 1333 - Wikipedia

    en.wikipedia.org/wiki/NGC_1333

    NGC 1333 is a reflection nebula located in the northern constellation Perseus, positioned next to the southern constellation border with Taurus and Aries. [3] It was first discovered by German astronomer Eduard Schönfeld in 1855. [4]

  5. List of diffuse nebulae - Wikipedia

    en.wikipedia.org/wiki/List_of_diffuse_nebulae

    This is a list of diffuse nebulae. Most nebulae are diffuse , meaning that they do not have well-defined boundaries. Types of diffuse nebulae include emission nebulae and reflection nebulae .

  6. Crescent Nebula - Wikipedia

    en.wikipedia.org/wiki/Crescent_Nebula

    Crescent Nebula (Caldwell27) captured by David Rousseau from an urban location in Québec, Canada using Ha and OIII narrowband filters. The Crescent Nebula (also known as NGC 6888, Caldwell 27, Sharpless 105) is an emission nebula in the constellation Cygnus, about 5000 light-years away from Earth. It was discovered by William Herschel in 1792. [2]

  7. Orion Nebula - Wikipedia

    en.wikipedia.org/wiki/Orion_nebula

    The Orion Nebula (also known as Messier 42, M42, or NGC 1976) is a diffuse nebula situated in the Milky Way, being south of Orion's Belt in the constellation of Orion, and is known as the middle "star" in the "sword" of Orion.

  8. List of planetary nebulae - Wikipedia

    en.wikipedia.org/wiki/List_of_planetary_nebulae

    Box Nebula NGC 6445: 1786 4.5 11.2 Sagittarius: Eye of Sauron Nebula M 1-42: 10 14 Sagittarius

  9. Category:Emission nebulae - Wikipedia

    en.wikipedia.org/wiki/Category:Emission_nebulae

    This is a diffusing subcategory of Category:Nebulae. Articles about emission nebulae in the parent category should be moved to this subcategory. Wikimedia Commons has media related to Emission nebulae .