A coronal mass ejection hit Earth's magnetic field on Oct. 8, 2012 sparking a dramatic display of Arctic lights that is only slowly subsiding three days later. The Aurora appears to be casting rays of green sunlight through the clouds. Have a wonderful weekend everyone! Credit: NASA/Dr. Tony Phillips | Image courtesy of Hugo Løhre, Lekangsund, Norway #NASA #Auroras #NorthernLights #greensky