gegenschein

الإنجليزية - الإنجليزية

تعريف gegenschein في الإنجليزية الإنجليزية القاموس.

A faint brightening of the night sky in the region of the ecliptic directly opposite the Sun

My object in appearing before the Association, at this time, is to present the observations of several other persons on the gegenschein or completed arch of the zodiacal light, of which I have received accounts since our meeting in Motreal.

{i} (Astronomy) counterglow, dim gleaming mark in the night sky near the ecliptic exactly across from the position of the sun

or counterglow Oval patch of faint light exactly opposite the Sun in the night sky, so faint it can be seen only in the absence of moonlight, away from city lights, with the eyes adapted to darkness. It is lost in the light of the Milky Way except in February, March, April, August, September, and October. The gegenschein and the zodiacal light form the most notable parts of a band of very faint light along the ecliptic. Both phenomena are thought to be the result of the reflection of sunlight from interplanetary dust grains

الواصلة

ge·gen·schein

المترادفات

counterglow

علم أصول الكلمات

() German Gegenschein (“counter-shine”).