Celestial hemisphere:  Northern  ·  Constellation: Cygnus (Cyg)  ·  Contains:  Crescent Nebula  ·  NGC 6888
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The Crescent Nebula in Wide-Field., Prabhakaran
The Crescent Nebula in Wide-Field.
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The Crescent Nebula in Wide-Field.

Getting plate-solving status, please wait...
The Crescent Nebula in Wide-Field., Prabhakaran
The Crescent Nebula in Wide-Field.
Powered byPixInsight

The Crescent Nebula in Wide-Field.

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Description

The Crescent Nebula, also known as NGC 6888, is an emission nebula in the constellation Cygnus, about 5000 light-years away from Earth. 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 to 400,000 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. At the bottom, slightly to the right is another faint bubble-shaped nebula called the Soap Bubble Nebula which is a planetary nebula.

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The Crescent Nebula in Wide-Field., Prabhakaran