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A dark nebula or absorption nebula is a type of interstellar cloud, particularly molecular clouds, that is so dense that it obscures the visible wavelengths of light from objects behind it, such as background stars and emission or reflection nebulae.
The nebulae listed by Barnard have become known as Barnard objects. [2] A 1919 version of the catalogue listed 182 nebulae; [ 3 ] by the time of the posthumously published 1927 version, it listed 369.
This is a list of dark nebulae (absorption nebulae), also called "dark clouds". The Milky Way as seen by Gaia, with prominent dark features labeled in white, as well as prominent star clouds labeled in black.
Two large stars residing inside a spectacular cloud of gas and dust nicknamed the "Dragon's Egg" nebula have presented a puzzle to astronomers. One of them has a magnetic field, as does our sun ...
Barnard 68 is a molecular cloud, dark absorption nebula or Bok globule, towards the southern constellation Ophiuchus and well within the Milky Way galaxy at a distance of about 125 parsecs (407 light-years). [2] It is both close and dense enough that stars behind it cannot be seen from Earth.
Lynds' Catalogue of Dark Nebulae (abbreviation: LDN) is an astronomical catalogue of dark nebulae. Objects listed in the catalogue are numbered with the prefix LDN (not to be confused with LBN, or Lynds' Catalogue of Bright Nebulae), from numbers 1 to 1802. [1] It was originally compiled in 1962 by American astronomer Beverly Turner Lynds. [2]
Barnard 92 (abbreviated to B92) is a dark nebula located in the Small Sagittarius Star Cloud.It was discovered by American astronomer Edward Emerson Barnard.. B92 was initially referred to as "the black hole," [2] given its appearance, after it was first catalogued in 1913. [3]
The Horsehead Nebula (also known as Barnard 33 or B33) is a small dark nebula in the constellation Orion. [2] The nebula is located just to the south of Alnitak , the easternmost star of Orion's Belt , and is part of the much larger Orion molecular cloud complex .