swap_horiz DR 21 Alternatives
Looking for alternatives to DR 21? Compare the top Nebula options ranked by our AI scoring system.
DR 21
DR 21 is a heavily obscured, massive star-forming region in the constellation Cygnus. It contains dense molecular material and is associated with a highly energetic molecular outflow produced during the formation of massive stars. Dust blocks much of its visible light, so astronomers study the regio...
apps Top DR 21 Alternatives
The top alternative to DR 21 in 2026 is Omega Nebula (M17) with a score of 8.8/10, followed by Rosette Nebula (NGC 2237) (8.7) and Sharpless 2-106 (Sh2-106) (8.7).
Omega Nebula (M17)
The Omega Nebula (Messier 17) is a vast emission nebula located approximately 5,500 light-years from Earth in the Sagitt...
Rosette Nebula (NGC 2237)
The Rosette Nebula (NGC 2237) is a massive, roughly circular emission nebula located in the constellation Monoceros, app...
Sharpless 2-106 (Sh2-106)
Sharpless 2-106 is a bipolar emission nebula located approximately 2,000 light-years from Earth in the constellation Cyg...
Cygnus X region
Cygnus X is a large star-forming complex in the Milky Way, located in the constellation Cygnus near the Galactic plane....
North America Nebula (NGC 7000)
The North America Nebula, catalogued as NGC 7000, is a large emission nebula in the constellation Cygnus whose projected...
War and Peace Nebula
The War and Peace Nebula, formally designated NGC 6357, is a star-forming emission nebula located in the Scorpius conste...
Heart Nebula (IC 1805)
The Heart Nebula, cataloged as IC 1805, is a large emission nebula located in the constellation Cassiopeia. Its recogniz...
Soul Nebula (IC 1848)
The Soul Nebula (IC 1848) is a large emission nebula and active star-forming region located in the constellation Cassiop...
Tadpole Nebula (IC 410)
The Tadpole Nebula is an emission nebula located in the constellation Auriga. It is notable for its distinctive, tadpole...
Flame Nebula (NGC 2024)
The Flame Nebula (NGC 2024) is an emission nebula in the constellation Orion, located approximately 1,400 light-years fr...
IC 1318 (Butterfly Nebula in Cygnus)
IC 1318 is a sprawling, diffuse emission nebula complex located in the constellation Cygnus, situated near the bright st...
Pelican Nebula (IC 5070)
The Pelican Nebula, designated IC 5070, is a large emission nebula located in the constellation Cygnus. It is physically...
Pacman Nebula (NGC 281)
The Pacman Nebula, catalogued as NGC 281, is an emission nebula and H II region in the constellation Cassiopeia. Ultravi...
Cygnus Wall
The Cygnus Wall is a prominent ridge of glowing gas and obscuring dust within the North America Nebula, cataloged as NGC...
IC 5146
IC 5146, commonly referred to as the Cocoon Nebula, is an emission and reflection nebula located in the constellation Cy...
De Mairan's Nebula (M43)
De Mairan's Nebula, designated as M43, is a star-forming emission nebula located in the constellation Orion. It is situa...
Sh2-101
Sh2-101 is an emission nebula within the Cygnus constellation. It’s a Sharpless H II region, specifically known as the T...
Cocoon Nebula (IC 5146)
The Cocoon Nebula, cataloged as IC 5146 and Caldwell 19, is an emission and reflection nebula located in the northern co...
DR 6 (Galactic Ghoul)
DR 6, nicknamed the Galactic Ghoul, is an H II region in the constellation Cygnus. An infrared image from NASA's Spitzer...
Pelican Ionization Front
Pelican Ionization Front is the bright ionized boundary of the Pelican Nebula, catalogued as IC 5070 in the constellatio...
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