bn:01582287n
Noun Concept
Categories: Protoplanetary nebulae, Stellar evolution, Nebulae
EN
protoplanetary nebula  preplanetary nebula  proto-planetary nebulae  protoplanetary nebulae
EN
A protoplanetary nebula or preplanetary nebula is an astronomical object which is at the short-lived episode during a star's rapid evolution between the late asymptotic giant branch phase and the subsequent planetary nebula phase. Wikipedia
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EN
A protoplanetary nebula or preplanetary nebula is an astronomical object which is at the short-lived episode during a star's rapid evolution between the late asymptotic giant branch phase and the subsequent planetary nebula phase. Wikipedia
Type of astronomical object Wikidata
A stage in stellar evolution when a star starts to shed its outer layers before coming a true planetary nebula. Wiktionary