Northern lights from space, illustration

Numéro d’image : 14079786
Northern lights from space, illustration
Illustration of the Aurora Borealis, or northern lights, seen from space. Auroral displays are caused by interactions between energetic charged particles from the Sun, and the Earth's atmosphere. Moving at 400-500 kilometres a second, the charged particles of the solar wind are drawn by Earth's magnetic field to the poles, where they collide with gas atoms and molecules, causing them to emit light. Green light is from oxygen atoms. The displays can be hundreds of kilometres above the Earth.
Licence : Libre de droits
Crédit: Science Photo Library / NEMES LASZLO
Model Release : Non requis
Property Release : Non requis
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