英语词汇“dark nebula”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	dark nebula
释义	dark nebula noun Astronomy A non-luminous nebula of dust and gas which is observable because it obscures light from other sources.In the inner regions of dark nebulae important events take place, such as the formation of stars and masers.... There are different forms of nebulas, dark nebulas, emission nebulas and celestial nebulas. In the Cigar Galaxy, there are blank spots where it appears there are not any stars, just dark nebulas.
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