Lagoon Nebula: Difference between revisions
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{{Infobox nebula | {{Infobox nebula | ||
| name=Lagoon Nebula | | name=Lagoon Nebula | ||
| image= | | image=Trifid Vera Rubins.png | ||
| | | caption= The Lagoon Nebula as imaged by the [[Vera C. Rubin Observatory]] in very high-resolution, taken on May 28, 2025<ref>{{cite web | title=Trifid and Lagoon (Image) | year=2025 | publisher=NSF–DOE Vera C. Rubin Observatory | url=https://rubinobservatory.org/gallery/collections/first-look-gallery/n4kvj0cemd5pbdqgtjdgp2jg2t| access-date=2025-06-26}}</ref>{{efn|The bluish-pink nebula on the upper right is the [[Trifid Nebula]].}} | ||
| type= H II region | | type= H II region | ||
| epoch = [[J2000]] | | epoch = [[J2000]] | ||
| Line 48: | Line 48: | ||
The Lagoon Nebula is estimated to be between 4,000–6,000 [[light-year]]s away from the [[Earth]]. In the sky of Earth, it spans 90' by 40', which translates to an actual dimension of 110 by 50 light years. Like many nebulae, it appears pink in time-exposure color photos but is gray to the eye peering through [[binoculars]] or a [[telescope]], human [[Visual perception|vision]] having poor color sensitivity at low light levels. The nebula contains a number of [[Bok globule]]s (dark, collapsing clouds of protostellar material), the most prominent of which have been catalogued by [[Edward Emerson Barnard|E. E. Barnard]] as B88, B89 and B296. It also includes a funnel-like or [[tornado]]-like structure caused by a hot [[O-type star]] that emanates [[ultraviolet light]], heating and ionizing gases on the surface of the nebula. The Lagoon Nebula also contains at its centre a structure known as the Hourglass Nebula (so named by [[John Herschel]]), which should not be confused with the better known [[Engraved Hourglass Nebula]] in the constellation of [[Musca]]. In 2006, four [[Herbig–Haro object]]s were detected within the Hourglass, providing direct evidence of active [[star formation]] by accretion within it.<ref name="Ariasetal2006" /> | The Lagoon Nebula is estimated to be between 4,000–6,000 [[light-year]]s away from the [[Earth]]. In the sky of Earth, it spans 90' by 40', which translates to an actual dimension of 110 by 50 light years. Like many nebulae, it appears pink in time-exposure color photos but is gray to the eye peering through [[binoculars]] or a [[telescope]], human [[Visual perception|vision]] having poor color sensitivity at low light levels. The nebula contains a number of [[Bok globule]]s (dark, collapsing clouds of protostellar material), the most prominent of which have been catalogued by [[Edward Emerson Barnard|E. E. Barnard]] as B88, B89 and B296. It also includes a funnel-like or [[tornado]]-like structure caused by a hot [[O-type star]] that emanates [[ultraviolet light]], heating and ionizing gases on the surface of the nebula. The Lagoon Nebula also contains at its centre a structure known as the Hourglass Nebula (so named by [[John Herschel]]), which should not be confused with the better known [[Engraved Hourglass Nebula]] in the constellation of [[Musca]]. In 2006, four [[Herbig–Haro object]]s were detected within the Hourglass, providing direct evidence of active [[star formation]] by accretion within it.<ref name="Ariasetal2006" /> | ||
{{clear left}} | {{clear left}} | ||
== See also == | == See also == | ||
* [[List of Messier objects]] | * [[List of Messier objects]] | ||
* [[Lists of nebulae]] | * [[Lists of nebulae]] | ||
== Notes == | |||
{{reflist|group=lower-alpha}} | |||
== References == | == References == | ||
Latest revision as of 17:38, 30 June 2025
Template:Short description Template:Infobox nebula The Lagoon Nebula (catalogued as Messier 8 or M8, NGC 6523, Sharpless 25, RCW 146, and Gum 72) is a giant interstellar cloud in the constellation Sagittarius. It is classified as an emission nebula and has an H II region.
The Lagoon Nebula was discovered by Giovanni Hodierna in 1654[1][2] and is one of only two star-forming nebulae faintly visible to the eye from mid-northern latitudes. Seen with binoculars, it appears as a distinct cloud-like patch with a definite core. Within the nebula is the open cluster NGC 6530.[3]
Characteristics
The Lagoon Nebula is estimated to be between 4,000–6,000 light-years away from the Earth. In the sky of Earth, it spans 90' by 40', which translates to an actual dimension of 110 by 50 light years. Like many nebulae, it appears pink in time-exposure color photos but is gray to the eye peering through binoculars or a telescope, human vision having poor color sensitivity at low light levels. The nebula contains a number of Bok globules (dark, collapsing clouds of protostellar material), the most prominent of which have been catalogued by E. E. Barnard as B88, B89 and B296. It also includes a funnel-like or tornado-like structure caused by a hot O-type star that emanates ultraviolet light, heating and ionizing gases on the surface of the nebula. The Lagoon Nebula also contains at its centre a structure known as the Hourglass Nebula (so named by John Herschel), which should not be confused with the better known Engraved Hourglass Nebula in the constellation of Musca. In 2006, four Herbig–Haro objects were detected within the Hourglass, providing direct evidence of active star formation by accretion within it.[4]
See also
Notes
References
External links
- Breaking Waves in the Stellar Lagoon — ESA/Hubble Photo Release
- Messier 8, SEDS Messier pages
- NightSkyInfo.com – M8, the Lagoon Nebula
- Messier 8, Pete's Astrophotography Gallery Template:Webarchive
- Messier 8, Lagoon Nebula, Map
- Astronomy Picture of the Day (APOD): Lagoon Nebula
- APOD: 2005 August 3 - The Busy Center of the Lagoon Nebula
- The Scale of the Universe (Astronomy Picture of the Day 2012 March 12)
- Template:WikiSky
- 7/30/2015 Photo release Hubble Space Telescope
- Lagoon Nebula on Instagram
Template:Portal bar Template:Messier objects Template:Sh2 objects Template:RCW Template:Gum catalogue Template:Ngc70 Template:Authority control Template:Sky