A planetary nebula (PN, plural PNe), is a type of emission nebula consisting of an expanding, glowing shell of ionized gas ejected from red giant stars late in their lives.[2]
Once all of the red giant's atmosphere has been dissipated, energetic ultraviolet radiation from the exposed hot luminous core, called a planetary nebula nucleus (P.N.N.), ionizes the ejected material.[2] Absorbed ultraviolet light then energizes the shell of nebulous gas around the central star
The mechanisms that produce such a wide variety of shapes and features are not yet well understood, but binary central stars, stellar winds and magnetic fields may play a role.
https://en.wikipedia.org/wiki/Planetary_nebula
Once all of the red giant's atmosphere has been dissipated, energetic ultraviolet radiation from the exposed hot luminous core, called a planetary nebula nucleus (P.N.N.), ionizes the ejected material.[2] Absorbed ultraviolet light, energy, and shell of conjectured energized gas around the central core
Once all of the red giant's: Infrared, Red Giant
atmosphere has been dissipated: ATM dissipation (by pressure, angular momentum disparity, weight size disparity, plane warp/angle, slipping, surrounding, scale reduction, time, cascade processes, rate considerations, time or no time, etc.); Stripping of interspaces, interspatial collapse (quantum interface disintegration, etc.), channel/directional field/space change/flux/etc. appearance (to transform/etc. or appear in place of quantum interface previously positioned/functional/etc.)[no descriptor terms may be available to describe the proceedings without unintentional allusion to or implication to/of replacements, laws of matter, superstitions, channel building, fields, particles, rays, waves, etc.], particle drag and particle propellant (segregation of particles; separation of particles; processes considerations; weight-size-force-quantity-etc. disparity system considerations; plane angle surroundings considerations - warping/arcing/distributions/etc., etc.), interactions occur as particles sort/segregate/rearrange/align/order/separate/process/change/integrate/derivate/discretize/harmonize/flux/drag/continuous/etc., etc..
energetic ultraviolet radiation: EMR Wavelength downgrade with Frequency Increase
exposed hot luminous core: Stripps insulation, Reveals core particle [esp. of higher energy/stronger force/etc. time cond/etc.] (possibly defines/etc. of ultraviolet energy rank/frequency/wavelength/EMR type/etc.)
ionizes the ejected material: Processes, Particle (e.g. core stripped), force manifestations, wave, ray, etc., occur to conjecture of energy transfer that reveals itself as ions [charged particles/substance/phase/etc. with conditions/etc., and to satisfy definition, etc.] (e.g. state, function, static, dynamic, structure, function, transform, particle, creation, reaction, yield, reagent, product, substrate, processes, etc.).
possibly defines/etc. of
occur to conjecture of
Absorbed ultraviolet light, energy: involved in process (utilizable or utilized; concentrations; etc.); etc..
shell of conjectured energized gas around the central core: EMR field; large scale; nuclear energy; etc..
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