bn:00062781n
Noun Concept
Categories: Articles with permanently dead external links, Planetary nebulae, Stellar evolution, Articles with short description
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
An astronomical object Wikipedia Disambiguation
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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