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backscatter comparison table
Subject has time of occurrence changes property has duration is a kind of has domain has definition has synonym
gegenschein direction backscatteratomic physicsFaint nebulous light about 20° across near the ecliptic and opposite the Sun, best seen in September and October. Also called counterglow.counterglow

Next scatteringBrillouin scattering    Upscattering    Previous scatteringZodiacal Light