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In this photo taken Sunday, Feb. 13, 2011, the aurora borealis, or northern lights, light up the sky above the village of Ersfjordbotn, near Tromso, northern Norway. (AP Photo/Keystone, Martial Trezzini) NO SALES, NO ARCHIVE

In this photo taken Sunday, Feb. 13, 2011, the aurora borealis, or northern lights, light up the sky above the village of Ersfjordbotn, near Tromso, northern Norway.

Northern Lights

The Northern Lights, also known as Aurora Borealis, occurs when energy particles from the sun interact with the earth’s magnetic field.