IC_5146, also known as the Cocoon Nebula, is a bright emission nebula located in the constellation Cygnus. It is approximately 2,500 light-years away from Earth and spans about 15 light-years across. The nebula is home to a young star cluster, which is still forming within its dense gas and dust. The Cocoon Nebula is notable for its striking appearance, featuring a central star that illuminates the surrounding material. It was first cataloged by the astronomer William Parsons in 1850. Observations of IC_5146 provide valuable insights into the processes of star formation and the lifecycle of nebulae.