The following pictures are copyright Cori Prazen (prazen.com/cori):

The following pictures are copyright Gene Moore (www.chaseday.com):

The following picture is copyrighted by National Geographic (www.nationalgeographic.com):

The following pictures are copyright University of Alaska Fairbanks (sprite.gi.alaska.edu):

The following picture is copyright Solar Data Analysis Center (umbra.nascom.nasa.gov):