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This timelapse of the Alaska 19s Northern Lights is amazing
posted January 27 2015 19:12.00 by Giorgos Lazaridis

Our home, Earth, has an invisible shield against cosmic radiation - Its magnetic field. Every now and then, the sun will send a wave of charged particles. Without this shield, life on Earth would not be possible.
As the particles are deflected from the Earth's magnetic field, some of them manage to return back and follow the magnetic lines. So eventually the go through the atmosphere at the south and north poles. These charged particles collide with the molecules on the air and the Alaska 19s Northern Lights appear...

But this scientific explanation cannot describe the beauty of the following video from National Geographic!


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