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physical object > natural object > celestial body > nebula > dark nebula > Horsehead Nebula |
Horsehead Nebula comparison table |
Subject | has definition | has synonym | 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 | ||
Horsehead Nebula | An absorption nebula in the middle of Orion. | NGC 2024 | dark nebula |
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