The Trifid Nebula is an H II region in the north-west of Sagittarius in a star-forming region in a nearby spiral arm's Scutum-centered part. It was discovered by Charles Messier on June 5, 1764. 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.
Kitt Peak National Observatory supports the most diverse collection of astronomical observatories, and is located 56 miles southwest of Tucson in the Schuk Toak District on the Tohono O'odham Nation. It has a Visitor Center open daily to the public.
Source: Wikipedia, the free encyclopedia (https://en.wikipedia.org/wiki/Eagle_Nebula)