WEATHERVIDEOHD.TV / SCIENCE PHOTO LIBRARY WEATHERVIDEOHD.TV / SCIENCE PHOTO LIBRARY
Timelapse footage of a double sunset, showing the setting sun illuminating normal clouds, which turn orange before they fade into darkness, after which the sun illuminates a much higher layer of airborne volcanic dust. The dust is thought to have been injected into the upper atmosphere by a volcanic eruption in Russia. Filmed in Colorado, USA.
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