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See also: Lists of nebulae. 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 lightyears). [2] It is both close and dense enough that stars behind it cannot be seen from Earth.
An image of Barnard 68, a dark nebula mistakenly used to refer to the Boötes Void.. The Boötes Void has been often associated with images of Barnard 68, [7] a dark nebula that does not allow light to pass through; however, the images of Barnard 68 are much darker than those observed of the Boötes Void, as the nebula is much closer and there are fewer stars in front of it, as well as its ...
The Horsehead Nebula. Coalsack Nebula. Cone Nebula. Dark Doodad Nebula. Dark Horse Nebula. Horsehead Nebula (Barnard 33) Pipe Nebula (also see Dark Horse Nebula; includes Barnard 59, 77 and 78) Snake Nebula (also see Dark Horse Nebula) Keyhole Nebula.
Ophiuchus (/ ˌɒfiˈjuːkəs /) is a large constellation straddling the celestial equator. Its name comes from the Ancient Greek ὀφιοῦχος (ophioûkhos), meaning "serpent-bearer", and it is commonly represented as a man grasping a snake. The serpent is represented by the constellation Serpens.
In 1919, the American astronomer Edward Emerson Barnard compiled a list of dark nebulae known as the Barnard Catalogue of Dark Markings in the Sky, or the Barnard Catalogue for short. 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 ...
Barnard's Loop (catalogue designation Sh 2 -276) is an emission nebula in the constellation of Orion. It is part of the Orion molecular cloud complex which also contains the dark Horsehead and bright Orion nebulae. The loop takes the form of a large arc centered approximately on the Orion Nebula. The stars within the Orion Nebula are believed ...
A molecular cloud, sometimes called a stellar nursery (if star formation is occurring within), is a type of interstellar cloud, the density and size of which permit absorption nebulae, the formation of molecules (most commonly molecular hydrogen, H 2), and the formation of H II regions. This is in contrast to other areas of the interstellar ...
More protesting Columbia and Barnard students were arrested and/or injured by New York City police during a second round of protests May 17–22, 1968, when community residents occupied a Columbia University-owned partially vacant apartment building at 618 West 114 Street to protest Columbia's expansion policies, and later when students re ...