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• 21:22, 25 January 2026 DanteWashere talk contribs created page Planetary nebula (Created page with "'''Planetary nebula''' is an expanding shell of ionized gas ejected from a low- or intermediate-mass star during the late stages of stellar evolution. It is illuminated by radiation from the remaining stellar core. Planetary nebulae are discussed in astrophysics, stellar evolution, and observational astronomy. == Status == Planetary nebulae are observed across multiple wavelengths, including optical and infrared. Models of their formation, morphology, and interaction w...")