Nebulae are interstellar clouds of dust, hydrogen, helium and other ionized gases.
Nebulae
Dumbell nebula (M27) 
Iris nebula (NCG 7023) 
Flame (NGC 2024) and Horsehead nebula (IC 434) 
Flame nebula (NGC 2024) 
Orion nebula (M42) 
Running man nebula (NGC 1977) 
North America nebula (NGC 7000) 
Pelican nebula (IC 5070) 
Soul nebula (IC 1848) 
Heart nebula (IC 1805) 
Tadpoles nebula (IC 410) 
Western Veil nebula (NGC 6960) 
Eastern Veil nebula (NGC 6992) 
Rosette nebula (NGC 2237) 
California nebula (NGC 1499) 
Pacman nebula (NGC 281) 
The Flaming star nebula (IC 405) 
Cone nebula (NGC 2264) 
Crab nebula (M1) 
Monkey head nebula (NGC 2174) 
Jellyfish nebula (IC 443) 
Heart of the Rosette nebula 
Owl nebula (M97) 
Wizard nebula (NGC 7380) 
Elephant trunk nebula (IC 1396)
