Celestial hemisphere:  Southern  ·  Constellation: Sagittarius (Sgr)  ·  Contains:  M 20  ·  M 21  ·  NGC 6514  ·  NGC 6531  ·  Trifid Nebula
M20 The Trifid Nebula, Luis Santo
M20 The Trifid Nebula
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M20 The Trifid Nebula

M20 The Trifid Nebula, Luis Santo
M20 The Trifid Nebula
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M20 The Trifid Nebula

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Description

[Wikipedia] The Trifid Nebula (catalogued as Messier 20 or M20 and as NGC 6514) is an H II region located in Sagittarius. It was discovered by Charles Messier on June 5, 1764.

Its name means 'divided into three lobes'. The object is an unusual combination of an open cluster of stars; an emission nebula (the lower, red portion), a reflection nebula (the upper, blue portion) and a dark nebula (the apparent 'gaps' within the emission nebula that cause the trifurcated appearance; The Trifid Nebula is a star-forming region in the Scutum spiral arm of the Milky Way.

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M20 The Trifid Nebula, Luis Santo