PBS
Nova: Gallery of Auroras
Find out what causes the aurora borealis. You can view some interesting photographs of the aurora in action.
Other
Twan: Messengers From the Sun
An incredible photograph of the aurora borealis with some fascinating information as to its origins are presented in this site.
University of Wisconsin
The Aurora Page Photographs by Jan Curtis
Nine pages of images, four to six to a page, showcase the magnificence of the Northern Lights.