This movement is a continued and infinitely rapid succession of flashes of energy (in Tibetan “tsal” or “shoug”). All objects perceptible to our senses, all phenomena of whatever kind and whatever aspect they may assume, are constituted by a rapid succession of instantaneous events."
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Planetary nebula (Wikipedia)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.