Cocoon Nebula (IC 5146)
Fr.: nébuleuse du cocon
Cocoon, from Provençal Fr. coucoun, from O.Fr. coque "egg shell, nut shell," L. coccum "berry," from Gk. kokkos "berry, seed;" → star; → nebula.
Miq, → nebula; pilé "the silkworm's cocoon; a purse", cf. Skt. patta- "woven silk."
Fr.: étoile dans son cocon
A star hidden in a dense envelope of gas and dust which is a strong source of infrared emission.