The Orion Nebula (also known as Messier 42, M42, or NGC 1976) is a diffuse nebula situated in the Milky Way, being south of Orion's Belt in the constellation of Orion. It is one of the brightest nebulae, and is visible to the naked eye in the night sky. M42 is located at a distance of 1,344 ± 20 light years and is the closest region of massive star formation to Earth. The M42 nebula is estimated to be 24 light years across. It has a mass of about 2000 times the mass of the Sun. Older texts frequently refer to the Orion Nebula as the Great Nebula in Orion or the Great Orion Nebula.
Photograph by Max Freier Rossington 20th December 2015 30 x 300 sec, 15 x 30 sec and 15 x 10 sec all at ISO 800 100 mm APO telescope and Canon 600D Astromodified Camera Processed with Deep Sky Stacker and Pix in Sight