bn:00062781n
Noun Concept
Categories: Articles with short description, Articles with permanently dead external links, Stellar evolution, Planetary nebulae
EN
planetary nebula  Gas nebulae  planetary nebulae  Planetary nebulas  PNe
EN
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 WordNet 3.0
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EN
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 WordNet 3.0 & Open English WordNet
A planetary nebula is a type of emission nebula consisting of an expanding, glowing shell of ionized gas ejected from red giant stars late in their lives. Wikipedia
Type of emission nebula Wikidata
A nebulosity surrounding a dying red giant, consisting of material expelled by the star. Wiktionary
WordNet 3.0 & Open English WordNet
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