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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 to ...
The nebula is named after its main star, λ Orionis, a blue giant responsible for the ionization of the surrounding material. [1] It is also sometimes called the Angelfish Nebula due to its resemblance as to its lighter areas (pink to peach colour) to an angelfish. In the infrared its ionized boundaries are that which appears, instead.
ELMO (65A: Furry red Muppet) So far ELMO is two for two for 2025 puzzle appearances, as we also saw him in yesterday's puzzle. INSET (66A: Map of Hawaii, often) This answer pairs well with ATLAS.
The nebula contains ions of extremely high ionization potential. [20] The helium hydride ion, thought to be the earliest molecule to have been formed in the Universe (about 100,000 years after the Big Bang), was detected in 2019 for the first time in space in NGC 7027. [21] [22] There is also evidence for the presence of nanodiamond in NGC 7027 ...
It is known as the Blue Snowball Nebula, Snowball Nebula, and Caldwell 22. This nebula was discovered October 6, 1784 by the German-born English astronomer William Herschel . In the New General Catalogue it is described as a "magnificent planetary or annular nebula, very bright, pretty small in angular size , round, blue, variable nucleus".
Barnard 1 (B1) is a dark nebula in the constellation of Perseus. It belongs to the Perseus molecular cloud complex and is located at a distance of 800 light-years from the Sun. The Perseus molecular cloud has several regions in the neighborhood of the Sun that are actively forming low-and intermediate-mass stars. [1]
NGC 6572 is a planetary nebula in the constellation Ophiuchus.It was discovered in 1825 by the German astronomer Friedrich Georg Wilhelm von Struve.According to several sources such as Sky & Telescope, this object received the nicknames Blue Racquetball, Emerald Nebula, Green Nebula, and Turquoise Orb.
NGC 1535, also known as Cleopatra's Eye, [3] is a planetary nebula in the constellation of Eridanus, discovered by William Herschel on February 1, 1785. [4] It is very similar to the Eskimo Nebula in both color and structure but the central star can be quite difficult to observe visually. [5]