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Definition of Dark nebula
1. 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. ¹
¹ Source: wiktionary.com
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1. 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. ¹
¹ Source: wiktionary.com