Crosswords Solver

Answer: airglow
Answer	Crossword Clue
AIRGLOW	Light in a night sky
AIRGLOW	Upper atmosphere light
airglow	a glow in the upper atmosphere

airglow	dim light from the upper atmosphere caused by emissions from atoms and molecules ionized by solar radiation: observed at night (nightglow), during the day (dayglow), and at twilight (twilight glow), with each having slightly different characteristics

Crossword

a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.

Answer: airglow