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The Crescent Nebula

NGC 6888 or Caldwell 27 or Sharpless 105


APR 22 - may 11

The Crescent Nebula, also known as NGC 6888, is a diffuse emission nebula located in the constellation Cygnus, approximately 5,000 light-years away from Earth. The nebula is formed by the strong stellar winds from the massive Wolf-Rayet star WR 136, which is the bright star near the center of the nebula.

The Crescent Nebula has a distinctive crescent shape, hence its name, and spans about 25 light-years across. It is primarily composed of ionized hydrogen gas and contains some traces of oxygen, nitrogen, and sulfur.


Nebula: 11 hours 45 minutes
Stars: 25 minutes

The Wolf-Rayet star at the center of the nebula is a massive, hot, and luminous star that is nearing the end of its life. It has already lost a significant amount of its outer layers through strong stellar winds, and it is expected to eventually explode as a supernova.

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