Auroras
Auroras (commonly called the Northern or Southern Lights) are bright, colorful streams of light caused by an overload of charged particles in the atmosphere along the Earth's magnetic lines of force. Learn all about this phenomenon here, with a self-guided tour that answers all of your questions about auroras and satellite photos showing recent aurora activity. The exhibition also includes links to aurora photography, movies and sounds, as well as more official information from related satellite and telescope links.
Source: Exploratorium
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