Aurora Borealis in Alaska

Numéro d’image : 11681487
Aurora Borealis in Alaska
Aurora Borealis illuminates the landscape over a camper and their tent by a frozen river in Northern Alaska. The Aurora Borealis (northern lights) is an atmospheric phenomenon that occurs at high latitudes,appearing as shimmering bands of coloured light in the sky. It occurs when charged particles in the solar wind are directed towards the poles by Earth's magnetic field. There they collide with atoms in the upper atmosphere,causing them to emit light. The colour of the light depends on the atmospheric gas involved. Green is produced by excited atomic oxygen. Photographed by the Koyukuk river in Northern Alaska
Licence : Droits gérés
Crédit: Science Photo Library / Madeley, Chris
Taille de l’image : 5669 px × 3780 px
Model Release : Non requis
Property Release : Non requis
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