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  2. Cygnus Molecular Nebula Complex - Wikipedia

    en.wikipedia.org/wiki/Cygnus_Molecular_Nebula...

    What makes the nebula bright is not, as it may seem, the star Sadr since it is not related to the molecular complex: although it is a very distant star, located around 1,500 light-years from Earth, it is the foreground compared to the nebulous field.

  3. Nebula - Wikipedia

    en.wikipedia.org/wiki/Nebula

    The Carina Nebula is an example of a diffuse nebula Most nebulae can be described as diffuse nebulae, which means that they are extended and contain no well-defined boundaries. [ 24 ] Diffuse nebulae can be divided into emission nebulae , reflection nebulae and dark nebulae .

  4. HH 24-26 - Wikipedia

    en.wikipedia.org/wiki/HH_24-26

    HH 24-26 is a molecular cloud and star-forming region containing the Herbig-Haro objects HH 24, HH 25 and HH 26. This region contains the highest concentration of astrophysical jets known anywhere in the sky. [2]

  5. NGC 1491 - Wikipedia

    en.wikipedia.org/wiki/NGC_1491

    NGC 1491, also known as LBN 704, SH2-206 or the Fossil Footprint Nebula, is an emission type bright nebula located about 9,800 light years away from Earth in the constellation of Perseus. [1] The nebula gets its deep red coloration due to many massive stars (such as BD+50 866 ) embedded within NGC 1491 producing large amounts of ultraviolet ...

  6. Strömgren sphere - Wikipedia

    en.wikipedia.org/wiki/Strömgren_sphere

    The Rosette Nebula, an example of a Strömgren sphere In theoretical astrophysics , there can be a sphere of ionized hydrogen (H II) around a young star of the spectral classes O or B . The theory was derived by Bengt Strömgren in 1937 and later named Strömgren sphere after him.

  7. NGC 7380 - Wikipedia

    en.wikipedia.org/wiki/NGC_7380

    The nebula is known as S 142 in the 1959 Sharpless catalog (Sh2-142). [2] It is extremely difficult to observe visually, usually requiring very dark skies and an O-III filter. The NGC 7380 complex is located at a distance of approximately 8.5 kilolight-years from the Sun , in the Perseus Arm of the Milky Way .

  8. Veil Nebula - Wikipedia

    en.wikipedia.org/wiki/Veil_Nebula

    The Veil Nebula is a cloud of heated and ionized gas and dust in the constellation Cygnus. [4]It constitutes the visible portions of the Cygnus Loop, [5] a supernova remnant, many portions of which have acquired their own individual names and catalogue identifiers.

  9. NGC 3132 - Wikipedia

    en.wikipedia.org/wiki/NGC_3132

    NGC 3132 (also known as the Eight-Burst Nebula, [2] the Southern Ring Nebula, [2] or Caldwell 74) is a bright and extensively studied planetary nebula in the constellation Vela. Its distance from Earth is estimated at 613 pc or 2,000 light-years .