nebula
noun/ˈnebjələ/
/ˈnebjələ/
(plural nebulae
(astronomy)/ˈnebjəliː/
/ˈnebjəliː/
)- a mass of dust or gas that can be seen in the night sky, often appearing very bright; a bright area in the night sky caused by a large cloud of stars that are far awayTopics Spacec2Word Originmid 17th cent. (as a medical term): from Latin, literally ‘mist’.
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nebula