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Dumbbell, e.g.
Else clues• Astronomer's sighting
• Astronomer's subject
• Astronomical cloud
• Astronomical dust ball
• Astronomical gas cloud
• Award for sci-fi writers
• Award won by Asimov, Herbert and Le Guin
• Bright spot in the night sky
• Celestial cloud
• Cloud in Orion
• Cloud of gas and dust
• Cloud of interstellar dust
• Cloud of interstellar gas and dust
• Cluster of stars
• Cosmic cloud
• Crab ___
• Crab in Taurus
• Crab, for one
• Diffuse mass of interstellar dust
• Distant cloud
• Dumbbell, e.g.
• Galactic mass
• Gas cloud in space
• Group of distant galaxies
• Horsehead ___
• Intergalactic cloud
• Interstellar cloud
• Interstellar dust cloud
• Interstellar formation
• Interstellar gas cloud
• Interstellar matter
• Literally, cloud
• Mass of interstellar dust
• Mount Palomar sighting
• Observatory sighting
• Orion ___
• Part of a galaxy
• Possible outcome of a supernova explosion
• Sci-fi author's award
• Sci-Fi award
• Sci-fi writing award
• Science fiction award
• Space cloud
• Space spiral
• Spiral ___
• Star cluster
• Very, very, very distant cloud
• Astronomer's sighting
• Astronomer's subject
• Astronomical cloud
• Astronomical dust ball
• Astronomical gas cloud
• Award for sci-fi writers
• Award won by Asimov, Herbert and Le Guin
• Bright spot in the night sky
• Celestial cloud
• Cloud in Orion
• Cloud of gas and dust
• Cloud of interstellar dust
• Cloud of interstellar gas and dust
• Cluster of stars
• Cosmic cloud
• Crab ___
• Crab in Taurus
• Crab, for one
• Diffuse mass of interstellar dust
• Distant cloud
• Galactic mass
• Gas cloud in space
• Group of distant galaxies
• Horsehead ___
• Intergalactic cloud
• Interstellar cloud
• Interstellar dust cloud
• Interstellar formation
• Interstellar gas cloud
• Interstellar matter
• Literally, cloud
• Mass of interstellar dust
• Mount Palomar sighting
• Observatory sighting
• Orion ___
• Part of a galaxy
• Possible outcome of a supernova explosion
• Sci-fi author's award
• Sci-Fi award
• Sci-fi writing award
• Science fiction award
• Space cloud
• Space spiral
• Spiral ___
• Star cluster
• Very, very, very distant cloud
• (pathology) a faint cloudy spot on the cornea
• A medicinal liquid preparation intended for use in an atomizer
• Cloudiness of the urine
• An immense cloud of gas (mainly hydrogen) and dust in interstellar space