Celestial hemisphere:  Northern  ·  Constellation: Cygnus (Cyg)  ·  Contains:  Crescent Nebula  ·  NGC 6888  ·  The star 34Cyg
NGC 6888 Region in Cygnus, Steven Bellavia
NGC 6888 Region in Cygnus
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NGC 6888 Region in Cygnus

NGC 6888 Region in Cygnus, Steven Bellavia
NGC 6888 Region in Cygnus
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NGC 6888 Region in Cygnus

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Description

Frome Wikipedia:

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. It is formed by the fast stellar wind from the Wolf-Rayet star WR 136 (HD 192163) colliding with and energizing the slower moving wind ejected by the star when it became a red giant around 250,000[3] to 400,000[citation needed] years ago. The result of the collision is a shell and two shock waves, one moving outward and one moving inward. The inward moving shock wave heats the stellar wind to X-ray-emitting temperatures.

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Revisions

  • NGC 6888 Region in Cygnus, Steven Bellavia
    Original
  • NGC 6888 Region in Cygnus, Steven Bellavia
    G
  • Final
    NGC 6888 Region in Cygnus, Steven Bellavia
    H

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NGC 6888 Region in Cygnus, Steven Bellavia

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Nebulae