a faint spot of light in the night sky that appears directly opposite the position of the sun; a reflection of sunlight by micrometeoric material in space
{i} (Astronomy) gegenschein, dim gleaming mark in the night sky near the ecliptic exactly across from the position of the sun
An exceedingly faint roundish or somewhat oblong nebulous light near the ecliptic and opposite the sun, best seen during September and October, when in the constellations Sagittarius and Pisces