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The monster sunspot group AR 1476 (upper left) measures more than 60,000 miles from end to end. NASA's Solar Dynamics Observatory spacecraft snapped this photo on May 7, 2012. | NASA/SDO
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Monster Sunspot To Unleash Powerful Solar Flares

A monster sunspot is set to unleash powerful solar flares. Understand how this monster sunspot is poised to unleash powerful solar flares.

May 8, 2012
3:00 AM EDT

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