Nightglow



[nahyt-gloh] /ˈnaɪtˌgloʊ/

noun
1.
See under .
[air-gloh] /ˈɛərˌgloʊ/
noun
1.
a 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.
/ˈɛəˌɡləʊ/
noun
1.
the faint light from the upper atmosphere in the night sky, esp in low latitudes
airglow
(âr’glō’)
A faint photochemical luminescence in the upper atmosphere caused by the collision of x-rays and charged particles from the Sun with atoms and molecules, especially of oxygen, sodium, and the hydroxyl radical (OH). Airglow is strongest over low and middle latitudes.

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