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.
The glory is most obvious around 0:05 and 0:06, but is much easier to see in this still: flickr.com/photos/kenspeckle/2623196792/
More info on glories here: kenspeckle.net/blog/2008/06/29/optical-illusion-of-glory