Celestial hemisphere:  Southern  ·  Constellation: Sagittarius (Sgr)  ·  Contains:  Lagoon Nebula  ·  M 20  ·  M 21  ·  M 8  ·  NGC 6514  ·  NGC 6523  ·  NGC 6526  ·  NGC 6530  ·  NGC 6531  ·  The star 7Sgr  ·  The star 9Sgr  ·  Trifid Nebula
M20 e M8, Trifid and Lagoon, Aldo Bassi
M20 e M8, Trifid and Lagoon
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M20 e M8, Trifid and Lagoon

M20 e M8, Trifid and Lagoon, Aldo Bassi
M20 e M8, Trifid and Lagoon
Powered byPixInsight

M20 e M8, Trifid and Lagoon

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Description

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.[3] 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; these are also designated Barnard 85)..

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 as an H II region.

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M20 e M8, Trifid and Lagoon, Aldo Bassi