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physical object > natural object > celestial body > nebula > dark nebula > Coalsack |
Coalsack comparison table |
Subject | has definition | has distance | is a kind of | is an instance of |
---|---|---|---|---|
dark nebula | A relatively dense cloud of interstellar matter whose dust particles obscure the light from stars beyond it and give the cloud the appearance of a region devoid of stars. | nebula | ||
Coalsack | A prominent dark nebula readily visible to the naked eye, located on the galactic plane. | 170 pc | dark nebula |
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