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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 ...
This GALEX image of the Cygnus Loop nebula could not have been taken from the surface of the Earth because the ozone layer blocks the ultra-violet radiation emitted by the nebula. The Cygnus Loop (radio source W78, or Sharpless 103) is a large supernova remnant (SNR) in the constellation Cygnus, an emission nebula measuring nearly 3° across. [1]
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 ...
Veil Nebula: 100–130 ly (31–40 pc) [61] Supernova remnant: Located in the Cygnus Loop: NGC 3576: 100 ly (31 pc) [62] Emission nebula: N41: 100 ly (31 pc) [63] Emission nebula: The following well-known nebulae are listed for the purpose of comparison. Orion Nebula: 20 ly (6.132 pc) [64] Diffuse Nebula: The closest major star formation region ...
The cast-off materials are essentially extremely large injections of cosmic dust into the star's stellar wind, which then carries it away from the star at several hundred kilometers per second. It is not well understood whether the unusual concentricity of WR 140's dust is due to interactions between the two stellar winds or is the result of ...
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.
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]
Cygnus A (3C 405) is a radio galaxy, one of the strongest radio sources in the sky. A concentrated radio source in Cygnus was discovered by Grote Reber in 1939. In 1946 Stanley Hey and his colleague James Phillips identified that the source scintillated rapidly, and must therefore be a compact object. [4]