Emission Nebulaeionized gas in spaceGamma Cygni and surroundingsNGC 3372 Eta Carina Nebula Hubble PaletteOrion WidefieldHeart and SoulSh2-140Antares and Rho Ophiuchi (2019)Zeta OphiuchiM 24 Sagittarius Star CloudNGC 6188 Fighting Dragons of AraNGC 6231 Zeta ScorpiiFilamentary Shell G296.2-2.8NGC 2020 Large Magellanic CloudNGC 6124 Lupus6M20 Trifid NebulaM8 Lagoon NebulaPi ScorpiiNGC 3532 Wishing Well ClusterIC 462830 Doradus Tarantula NebulaIC 2944 Running Chicken NebulaM17 Omega NebulaNGC 3372 Eta Carina Nebula (2016)NGC 6188Plejades M45Horsehead NebulaIC 410IC 1805 Heart Nebula (2014)Pelican Nebula Real ColorPelican Nebula Hubble PaletteM16Leo IIAntares and Rho Ophiuchi MosaicAntares and Rho Ophiuchi (2011)NGC 3199M8 Lagoon Nebula NarrowbandIC 1805 Heart NebulaIC 1396 Elephant Trunk HaNGC7000 NarrowbandEta Carina NebulaM8 Lagoon NebulaNGC 2174 Monkey Head NebulaNGC 6914IC 1396 Elephant TrunkNGC7635 Bubble NebulaGamma CygniM8 M20 WidefieldNGC 7000IC1396Antares