Top Qs
Timeline
Chat
Perspective
Lagoon Nebula
Emission nebula in Sagittarius From Wikipedia, the free encyclopedia
Remove ads
The Lagoon Nebula (catalogued as Messier 8 or M8, NGC 6523, Sharpless 25, RCW 146, and Gum 72) is a giant emission nebula with an H II region located in the constellation Sagittarius. Discovered by Giovanni Hodierna in 1654, it is one of only two star-forming nebulae faintly visible to the naked eye from mid-northern latitudes[6][7] (the other being the Orion Nebula).
Remove ads
Characteristics
Located approximately 4,000–6,000 light-years from Earth, the nebula spans 110 by 50 light-years (appearing as 90' by 40' in Earth's sky). While appearing pink in long-exposure photographs, it typically appears gray when viewed through binoculars or telescopes due to the human eye's limited color sensitivity in low-light conditions. The nebula contains the young open cluster NGC 6530 within its structure.[8]
The Lagoon Nebula features several distinctive structures, including:
- Multiple Bok globules cataloged by E. E. Barnard (B88, B89, and B296)
- A funnel-shaped structure formed by ultraviolet radiation from a hot O-type star
- The centrally-located Hourglass Nebula (named by John Herschel), distinct from the Engraved Hourglass Nebula in Musca
Observations in 2006 revealed four Herbig–Haro objects within the Hourglass structure, providing direct evidence of ongoing star formation through accretion processes.[3]
Remove ads
Gallery
- Lagoon Nebula in HaRGB
- Lagoon Nebula in SHO by amateur astronomer Buzz Jumaah from Auckland, New Zealand
See also
Notes
- The bluish-pink nebula on the upper right is the Trifid Nebula.
References
External links
Wikiwand - on
Seamless Wikipedia browsing. On steroids.
Remove ads