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COUNTERGLOW - 3 reference results
counterglow
counterglow: see gegenschein.
The Columbia Electronic Encyclopedia Copyright © 2004.
Licensed from Columbia University Press
gegenschein
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.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
counterglow
Jan 01, 1997; counterglow Another name for the gegenschein .
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Gegenschein
Jan 01, 2000; Gegenschein (German: counterglow ) A faint elliptical patch of light visible on a moonless night on the ecliptic at a point...
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gegenschein
Jan 01, 1997; gegenschein A faint, diffuse oval glow some 10° across, appearing in the midnight sky directly opposite the Sun; also known...
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countertwilight
Jan 01, 2001; countertwilight See COUNTERGLOW .
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shadow of the Earth
Jan 01, 2001; shadow of the Earth The shadow of the solid Earth cast on to distant objects (such as mountain-tops) or the atmosphere itself,...
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