preplanetary
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preplanetary — preplanetary, planting see pre B. 1 … Useful english dictionary
preplanetary nebula — noun A stage in stellar evolution when a star starts to shed its outer layers before coming a true planetary nebula. Syn: protoplanetary nebula … Wiktionary
Protoplanetary nebula — A protoplanetary nebula or preplanetary nebula Harv|Sahai|Sánchez Contreras|Morris|2005 (PPN) is an astronomical object which is at the short lived episode during a star s rapid stellar evolution between the late asymptotic giant branch (LAGB)Ref … Wikipedia
Протопланетарная туманность — Туманность Тухлое яйцо протопланетарная туманность в созвездии Корма Протопланетарная туманность или предпланетарная туманность (ППТ) это астрон … Википедия
Nebula — Nebulae redirects here. For the supercomputer in China, see Nebulae (computer). For other uses, see Nebula (disambiguation). The Pillars of Creation from the Eagle Nebula … Wikipedia
Asymptotic giant branch — The asymptotic giant branch is the region of the Hertzsprung Russell diagram populated by evolving low to medium mass stars. This is a period of stellar evolution undertaken by all low to intermediate mass stars (0.6 10 solar masses) late in… … Wikipedia
Frosty Leo Nebula — Protoplanetary nebula caption= 2003 Hubble Advanced Camera for Surveys HRC name = Frosty Leo Nebula epoch = J2000 ra = RA|09|39|53.96Harv|SIMBAD|2007] dec = DEC|+11|58|52.4 dist ly = 3.0 kly (920 pc)Harv|Davis|Smith|Gledhill|Varricatt|2005]… … Wikipedia
chemical element — Introduction also called element, any substance that cannot be decomposed into simpler substances by ordinary chemical processes. Elements are the fundamental materials of which all matter is composed. This article considers the… … Universalium
protoplanetary nebula — noun A stage in stellar evolution when a star starts to shed its outer layers before coming a true planetary nebula. Syn: preplanetary nebula … Wiktionary
