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<p>This extreme ultraviolet wavelength image provided by NASA shows a solar flare. A flare is affecting Earth today, and could disrupt power grids, GPS and airplane flights. Forecasters at the National Oceanic and Atmospheric Administration's (NOAA) Space Weather Prediction Center said the sun erupted Tuesday evening and the effects should start smacking Earth late Wednesday night, close to midnight EST. They say it is the biggest in five years and growing. (AP Photo/NASA)</p>

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Solar storm could spread Northern Lights
March 8, 2012 7:42 a.m.

Solar storm could spread Northern Lights

WASHINGTON (AP) — Earth's magnetic field is about to be shaken like a snow globe by the largest solar storm in five years.