Crazy Airglow

Airglow (also called nightglow) is a faint emission of light by a planetary atmosphere. In the case of Earth’s atmosphere, this optical phenomenon causes the night sky never to be completely dark, even after the effects of starlight and diffused sunlight from the far side are removed.

Crazy Airglow

Airglow is caused by various processes in the upper atmosphere, such as the recombination of atoms which were photoionized by the sun during the day, luminescence caused by cosmic rays striking the upper atmosphere, and chemiluminescence caused mainly by oxygen and nitrogen reacting with hydroxyl ions at heights of a few hundred kilometres. It is not noticeable during the daytime because of the scattered light from the sun.

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2 Comments

  1. Michael Dwyer June 21, 2016 at 7:00 am #

    Awesome stuff as usual 😀

    • Carlos June 28, 2016 at 6:11 am #

      Thanks Michael 😀 really appreciate the feedback!

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