NOUN
- a faint spot of light in the night sky that appears directly opposite the position of the sun; a reflection of sunlight by micrometeoric material in space
How To Use counterglow In A Sentence
- This is the Gegenschein, derived from a German word meaning "counterglow," since it is always opposite or "counter" in position to the sun in the sky. SPACE.com
- • there is sufficient material at the-Earth-Moon libration points L4 and L5 to produce a solar counterglow of 20 S10 Vis brightness Opportunity Finds Another Big Meteorite | Universe Today
