Lagoon nebula

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Lagoon Nebula,

bright, diffuse nebulanebula
[Lat.,=mist], in astronomy, observed manifestation of a collection of highly rarefied gas and dust in interstellar space. Prior to the 1960s this term was also applied to bodies later discovered to be galaxies, e.g.
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 in the southern constellation Sagittarius; cataloged as M8 or NGC 6526. It is visible to the naked eye and has an angular area larger than that of the full moon. The central parts are extremely bright, and some stars can be seen embedded in the nebulosity. Because of the nebula's large size, light from its stars cannot illuminate all of the associated interstellar gas and dust. Thus, parts of it appear blacker than the surrounding sky.
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Lagoon nebula

(M8; NGC 6523) An emission nebula in the form of an H II region that lies about 1 kiloparsec away in the direction of Sagittarius. It contains the open cluster NGC 6530. Its total apparent magnitude (5.8) makes it easily visible with binoculars.
Collins Dictionary of Astronomy © Market House Books Ltd, 2006

Lagoon Nebula

[lə′gün ′neb·yə·lə]
A patchy, luminous gaseous nebula that appears to be surrounded by a much larger region of cold, neutral hydrogen.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Last year, NASA also released an ( image to celebrate the Hubble's 28th anniversary, this time showing a small section of the stunning Lagoon Nebula. 
This recent Image of Messier 8, or the Lagoon Nebula, was taken during February 12-18, 2018, using the Hubble Telescope's Wide Field Camera.
EoACA[pounds sterling]The lunar eclipse of June 26 will occur at the moonEoACAOs ascending node in western Sagittarius, about three degrees east of the Lagoon Nebula.EoACA[yen]
* A panorama titled "Inside the Lagoon Nebula," showing a whirlwind of spectacular star formation some five light years across.
Within this constellation is M8, the Lagoon nebula,another example of an emission nebula like M42.
Six that are both prominent and well-known are: the Cygnus Star Cloud, the Scutum Star Cloud, the Large Sagittarius Star Cloud, the Small Sagittarius Star Cloud (M24), the Lagoon Nebula (M8), and the big open star cluster M 7.
To celebrate the upcoming anniversary, the telescope's operators - NASA and the European Space Agency (ESA) - turned Hubble toward the Lagoon Nebula and shared the stunning images captured.
Binoculars and telescopes reveal dozens of star clusters and nebulae in Sagittarius, none finer than M8 (the Lagoon Nebula), M17 (the Omega or Swan Nebula), dimmer M20 (the Trifid Nebula) and the great globular cluster M22.
On September 6th, Saturn halts its retrograde (westward) motion 2[degrees] above or upper left of M8 (the Lagoon Nebula) and east of M20 (the Trifid Nebula), and slowly begins to move eastward in northern Sagittarius.
Now sweep westward to M8, the Lagoon Nebula, in the Milky Way cloud that rises like steam from the Teapot's spout.