VDict - Definition of planetary nebula

English - English (Wordnet) dictionary

planetary nebula

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Noun

a nebula that was once thought to be a star with its planets but is now thought to be a very hot star surrounded by an expanding envelope of ionized gases that emit a fluorescent glow because of intense radiation from the star

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Words contain "planetary nebula" in its definition in English - English (Wordnet) dictionary:
planetary planetal terrestrial nebular hypothesis tycho brahe gravity-assist brahe johan kepler johannes kepler kepler more...

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