Auroras are caused by the bombing of the upper atmosphere by charged particles moving to the land along the geomagnetic field lines of the adjacent space, called plasma layer.
Photographer Frances Anderson kindly shared picture of this beautiful natural phenomenon, which he took in Tuktoyaktuk, Northwest Territories, Canada.
Northern Lights
Northern Lights during a lunar eclipse December 21, 2010, Tuktoyaktuk, Canada
Northern Lights day
Northern Lights December 30, 2010, Tuktoyaktuk, Canada
Northern Lights. The sky turns green
Northern lights and power lines
Northern Lights over house
Blue aurora borealis
This picture was taken December 4, 2010 at midnight in Tuktoyaktuk, Canada. The temperature was - 44C
Northern Lights
Northern Lights. Blue ray