"airglow." YourDictionary, n.d. Web. 09 December 2018. <https://www.yourdictionary.com/airglow>.
airglow. (n.d.). Retrieved December 09th, 2018, from https://www.yourdictionary.com/airglow
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.