The Northern Lights are a spectacular scene of green light that spread through the sky. This phenomena is called Aurora Borealis and can only be seen from northern latitudes. This particular picture was taken from about 30 km east of Yellowknife, Northwest Territories, Canada. The lights span long distances such as the 180 degrees this one covered. These lights are caused by energized particles in the upper atmosphere and they are green because of molecular oxygen.
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