View full screen, lean back from the monitor, and look carefully to see a faint impression of the optical illusion known as a glory, as seen out of a plane window.
Try to find the shadow of the airplane on the clouds just to the right of the center of this shot. The "glory" part is the small rainbow-like aura around the plane's shadow.
More info on glories here: kenspeckle.net/blog/2008/06/29/optical-illusion-of-glory
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