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At the estimated distance of 2400 light-years, the nebula has a radius of 65 light-years (a diameter of 130 light-years). The thickness of each filament is 1 ⁄ 50,000 th of the radius, or about 4 billion miles, roughly the distance from Earth to Pluto. Undulations in the surface of the shell lead to multiple filamentary images, which appear ...
NGC 6960, the Western Veil, is the western part of the remnant, also known as the "Witch's Broom", located at J2000 RA 20 h 45 m 58.1 s Dec +30° 35′ 43″. [3] As the westernmost NGC object in the nebula (first in right ascension), its number is sometimes used as an NGC identifier for the nebula as a whole.
On the edge of this cloud complex are some open clusters, such as NGC 6940, about 2,400 light-years away, [15] and some Wolf-Rayet stars, including the bright WR 147, whose brightness is strongly obscured (it appears to be of 15th apparent magnitude, although its absolute magnitude is -4.7) at a distance of 630 parsecs (2050 light-years). [16 ...
Sh 2-101, at least in the field seen from Earth, is in close proximity to microquasar Cygnus X-1, site of one of the first suspected black holes. Cygnus X-1 is located about 15 ′ west of Sh 2-101. The companion star of Cygnus X-1 is a spectral class O9.7 Iab supergiant with a mass of 21 solar masses and 20 times the radius of the Sun.
Crescent Nebula (Caldwell27) captured by David Rousseau from an urban location in Québec, Canada using Ha and OIII narrowband filters. The Crescent Nebula (also known as NGC 6888, Caldwell 27, Sharpless 105) is an emission nebula in the constellation Cygnus, about 5000 light-years away from Earth. It was discovered by William Herschel in 1792. [2]
It was discovered by Charles Messier in 1764, and can be seen from Earth by using binoculars. M29 is well within the several degrees of the arms and bulge of the Milky Way . It is at least many hundreds of light years short of the yardstick distance to the Galactic Center , as is between 4,000 [ 6 ] and 7,200 light years away. [ 7 ]
By Will Dunham. WASHINGTON (Reuters) - The solar wind is a ubiquitous feature of our solar system. This relentless high-speed flow of charged particles from the sun fills interplanetary space.
IC 5146 (also Caldwell 19, Sh 2-125, Barnard 168, and the Cocoon Nebula) is a reflection [2] /emission [3] nebula and Caldwell object in the constellation Cygnus. The NGC description refers to IC 5146 as a cluster of 9.5 mag stars involved in a bright and dark nebula.