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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 ]
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 .
NGC 6530 is a young [8] open cluster of stars in the southern constellation of Sagittarius, located some 4,300 light years from the Sun. [3] It exists within the H II region known as the Lagoon Nebula, or Messier 8, [9] and spans an angular diameter of 14.0′. [5]
The Trifid Nebula (M20, NGC 6514) is an emission nebula in Sagittarius that lies less than two degrees from the Lagoon Nebula. Discovered by French comet-hunter Charles Messier , it is located between 2,000 and 9,000 light-years from Earth and has a diameter of approximately 50 light-years.
The apparent size of the nebula is 0.8'3 or 0.79'4 (0.795 ± 0.005'), which, taking into account the distance calculations, equates to an actual size of 1, 26 ± 0.26 al. Observations show the expanding CO shell is pretty much continuously distributed around the minor axis waist and the nebula is tilted to the plane of the sky. The shell is ...
Hubble's Variable Nebula; Iris Nebula; Lagoon Nebula; North America Nebula ... Rosette Nebula; Running Chicken Nebula; Soul Nebula; Tarantula Nebula; Trifid Nebula ...
It is referred to as the Northern Trifid because of its similar appearance to the Trifid Nebula, which is located in the southern celestial hemisphere of the sky. It is a H II region, a region of star formation. [4] The star cluster contains the emission-line star LkHα 101, which provides much of the ionizing radiation in the nebula. [5]
Barnard 67 - part of Pipe Nebula; Barnard 68 - possibly the closest at about 400 light-years; Barnard 72 - Snake Nebula; Barnard 75; Barnard 80; Barnard 81; Barnard 84; Barnard 84; Barnard 85 - dark part of the Trifid Nebula; Barnard 86; Barnard 87 - Parrot's Head Nebula; Barnard 88 - dark part of the Lagoon Nebula; Barnard 90; Barnard 92 ...