gegenschein - meaning and definition. What is gegenschein
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What (who) is gegenschein - definition

FAINT BRIGHTENING OF THE NIGHT SKY IN THE REGION OF THE ANTISOLAR POINT
Counterglow; Lumière antisolaire; Counter glow
  • The gegenschein appears in this image as a bright spot on the diagonal band (running top left to lower right) above the [[Very Large Telescope]]. (The [[Andromeda Galaxy]] and [[Pleiades]] are prominent in the lower half of the image.)

gegenschein         
['ge?g?n????n]
¦ noun Astronomy a patch of very faint reflected light sometimes seen in the night sky opposite the position of the sun.
Origin
C19: Ger. Gegenschein, from gegen 'opposite' + Schein 'glow, shine'.
Gegenschein         
Gegenschein (; ; ) or counterglow is a faintly bright spot in the night sky centered at the antisolar point. The backscatter of sunlight by interplanetary dust causes this optical phenomenon.
Counterglow         
·add. ·noun 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. Its cause is not yet understood. Called also Gegenschein.

Wikipedia

Gegenschein

Gegenschein (; German: [ˈɡeːɡn̩ˌʃaɪn]; lit.'counter-shine') or counterglow is a faintly bright spot in the night sky centered at the antisolar point. The backscatter of sunlight by interplanetary dust causes this optical phenomenon.