Image Tags
nebula space stars astronomy universe galaxy Orion Nebula Messier 42 M42 NGC 1976 diffuse nebula emission nebula reflection nebula horsehead nebula dark nebula interstellar dust interstellar gas ionized gas hydrogen gas oxygen gas nitrogen gas sulfur gas cosmic dust cosmic gas molecular cloud star-forming region stellar nursery birth of stars pillars of creation cosmic cliffs NASA ESA Hubble Space Telescope James Webb Space Telescope