A faint cone of light in the night sky extending upward from the horizon in the direction of the ecliptic ( zodiac). It is seen at tropical latitudes for a few hours after sunset or before sunrise. It is mainly explained by the forward scattering of sunlight by particles in interplanetary space along the ecliptic.
a luminous tract in the sky; a reflection of sunlight from cosmic dust in the plane of the ecliptic; visible just before sunrise and just after sunset
A band of light visible along the ecliptic, the zodiacal light is produced by asteroid and comet debris scattering sunlight.