Scientists Find Trigger for Northern Lights - NYTimes.com
Scientists are pretty sure now what triggers the Aurora Borealis, also known as the Northern Lights, and now have something that they might be able to use as a first step toward a predictive model.
The short answer (do read the entire article though) magnetic storms on the sun but not in the way previously predicted by the old paradigm.
Posted by Jvstin at July 25, 2008 6:26 PM