what is geocorona? please answer me
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The geocorona is the luminous part of the outermost region of the Earth's atmosphere, the exosphere. It is seen primarily via far-ultraviolet light (Lyman-alpha) from the Sun that is scattered from neutral hydrogen. It extends to at least 15.5 Earth radii and probably up to about 100 Earth radii.
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The ultraviolet light emanating from the outermost region of the earth's atmosphere, consisting chiefly of sunlight absorbed and then reemitted from hydrogen atoms.
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