The largest solar storm in five years sent a huge wave of radiation into earth's atmosphere creating a brilliant show of the aurora borealis near Yellowknife, N.W.T. on Thursday March 8, 2012. Yellowknife, which is situated directly under the auroral "oval", has some of the best northern lights viewing in the world. The rise of the full moon happens in the background. (AP Photo/Bill Braden, The Canadian Press)