gegenschein

• Faible lueur diffuse observée dans le ciel nocturne, située exactement à l'opposé du Soleil, causée par la réflexion de la lumière solaire sur des particules de poussière interplanétaire.

A faint, diffuse patch of light in the night sky located directly opposite the sun, caused by the reflection of sunlight from interplanetary dust particles.

indénombrable

1. Faint celestial glowC2formalscientific

   A faint, diffuse, oval-shaped patch of light in the night sky located at the antisolar point, directly opposite the sun, caused by the reflection of sunlight from interplanetary dust particles.

   Gegenschein (Lueur antisolaire)

   • The gegenschein is best observed on a moonless night far from city lights.
   • Astronomers study the gegenschein to learn about the distribution of dust in the solar system.
   • The gegenschein appears as a subtle brightening in the zodiacal light band.

   Synonymescounterglow