Dark-nebula Definition
noun
(astronomy) A type of nebula that unlike other types of nebulae does not emit or reflect light and therefore appears as a starless region in the sky.
Horsehead Nebula is a typical dark nebula, and is famous for resembling the head of a horse.
Wiktionary
Other Word Forms of Dark-nebula
Noun
Singular:
dark-nebula
Plural:
dark nebulae, dark nebulasRelated Articles
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