NGC 6888 Crescent Nebula

Figure 1. The Crescent Nebula (NGC 6888)

NGC 6888, known as the Crescent Nebula, is an emission nebula in the constellation Cygnus. It formed when the strong stellar wind from the Wolf-Rayet star WR 136 pushed into slower material shed earlier in the star's life. This interaction created a bright shell of glowing gas with a curved shape that stands out well in narrowband astrophotography.