Celestial hemisphere:  Southern  ·  Constellation: Sagittarius (Sgr)  ·  Contains:  B85  ·  HD163596  ·  HD163800  ·  HD163811  ·  HD163892  ·  HD163919  ·  HD163936  ·  HD163980  ·  HD164002  ·  HD164018  ·  HD164030  ·  HD164068  ·  HD164171  ·  HD164193  ·  HD164225  ·  HD164226  ·  HD164294  ·  HD164384  ·  HD164402  ·  HD164452  ·  HD164492  ·  HD164514  ·  HD164534  ·  HD164637  ·  HD164703  ·  HD164704  ·  HD164717  ·  HD164718  ·  HD164739  ·  HD164766  ·  And 168 more.
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M20, Don Pearce
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M20

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M20, Don Pearce
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M20

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Description

The Trifid Nebula (catalogued as Messier 20 or M20 and as NGC 6514) is an H II region in the north-west of Sagittarius in a star-forming region in the Milky Way's Scutum-Centaurus Arm.[3] It was discovered by Charles Messier on June 5, 1764.[4] Its name means 'three-lobe'. The object is an unusual combination of an open cluster of stars, an emission nebula (a relatively dense, red-yellow portion), a reflection nebula (the mainly NNE blue portion), and a dark nebula (the apparent 'gaps' in the former that cause the trifurcated appearance also designated Barnard 85). Viewed through a small telescope, the Trifid Nebula is a bright and peculiar object, and is thus a perennial favorite of amateur astronomers.[5]

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M20, Don Pearce