article: Lists of nebulae
links: Wolf–Rayet star Star Star formation Omega Nebula Cave nebula Vela supernova remnant Tarantula nebula Trifid nebula Crab Nebula Saturn Nebula Planetary nebula Lagoon Nebula Horsehead nebula H II region Flame nebula Supergiant Carina nebula Orion nebula Dumbbell nebula Iris nebula Nebula Helix nebula North America nebula Pencil nebula Pelican nebula Eagle nebula