IC5146 · The Cocoon Nebula

Hidden within the constellation Cygnus, approximately 4,000 light-years from Earth, IC 5146, better known as the Cocoon Nebula, is an active stellar nursery where glowing gas and interstellar dust intertwine. At its heart, radiation from young massive stars ionizes the surrounding hydrogen, causing the nebula to glow, while dense clouds of cosmic dust obscure parts of the region and sculpt its distinctive structure. IC 5146 extends into Barnard 168, a long dark nebula silhouetted against the rich stellar background of the Milky Way. This striking interplay between glowing hydrogen and dark interstellar dust reveals a region where new generations of stars are still being born. Constellation: Cygnus Type: Emission nebula / star-forming region Distance: ~4,000 light-years