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What is going on in the sky?

The green glowing sky above here is caused by a phenomena analogous to the northern lights known as airglow. Airglow is caused by the light of electronically and/or vibrationally excited atoms and molecules. Green light from excited oxygen atoms dominates the glow. Below the airglow is a bright layer of light pollution coming from natural gas being flared off on a new oil and gas field to my north near Grover.

Image Notes: I tried to keep the colors as true to life as possible here to not lose the delicate airglow. I took two frames to extend the two-track foreground.

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