Messier 42, the Orion Nebula (right), a diffuse reflection and emission nebula, and NGC 1977, the Running Man Nebula (left), an open star cluster embedded in several emission nebulae and a reflection nebula

 
Messier 42, the Orion Nebula (right), a diffuse reflection and emission nebula, and NGC 1977, the Running Man Nebula (left), an open star cluster embedded in several emission nebulae and  a reflection nebula

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