Tonight: Geomagnetic Storms

Heads up for a free light show!If you live in the U.S. or nearby, you may be able to see some geomagnetic storms in the sky in the pre-morning hours tomorrow (Wednesday, August 4, 2010).Sky viewers might get to enjoy some spectacular Northern Lights, or aurorae, tomorrow. After a long slumber, the Sun is waking up. Early Sunday morning, the Sun's surface erupted and blasted tons of plasma (