zodiacal light
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Zodiacal light is a faint glow that appears in the night sky extending from where the Sun is located and stretching along the zodiac (the band of constellations the Sun passes through). It's caused by sunlight reflecting off dust particles in space and is most visible under very dark skies during twilight hours.
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Two false dawns, gegenschein (middle) and the rest of the zodiacal band of light and zodiac marked (visually crossed by the Milky Way), in this composite image of the night sky above the Northern and Southern Hemisphere
The zodiacal light (also called false dawn when seen before sunrise) is a faint glow of diffuse sunlight scattered by interplanetary dust. Brighter around the Sun, it appears in a particularly dark night sky to extend from the Sun's direction in a roughly triangular shape along the zodiac, and appears with less intensity and visibility along the whole ecliptic as the zodiacal band. Zodiacal light spans the entire sky and contributes to the natural light of a clear and moonless night sky. A related phenomenon is gegenschein (or counterglow), sunlight backscattered from the interplanetary dust, which appears directly opposite to the Sun as a faint but slightly brighter oval glow.