NGC 6888 – The Crescent Nebula
NGC 6888 – The Crescent Nebula NGC 6888, popularly known as the Crescent Nebula and also designated Caldwell 27, is an emission nebula located in the constellation of Cygnus, approximately 4,700 light-years from Earth. It was discovered by William Herschel in 1792. Unlike a planetary nebula, NGC 6888 is a Wolf-Rayet nebula, formed by the […]
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