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emission nebula
(redirected from Emission nebulae)

    Also found in: Encyclopedia, Wikipedia 0.02 sec.
emission nebula
n.
A nebula that absorbs ultraviolet radiation from stars and reemits it as visible light.
emission nebula
n
(Astronomy) a type of nebula that emits visible radiation See nebula
emission nebula  (-mshn)
A nebula that absorbs ionizing ultraviolet radiation from nearby hot stars or star remnants and reemits it as visible light. HII regions, planetary nebulae, and nebulae created by the explosion of supernovae are different kinds of emission nebulae. See more at nebula.


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