NASA uncovers secret of the Northern Lights

This is an article from the end of July 08 about the Northern Lights, the Northern Lights that make actual colors appear in the sky, not the Northern Lights that makes you see colors that are not really there. It has pretty pictures . . . and are apparently caused by space storms.

http://content.techrepublic.com.com/2346-10878_11-212363.html