Solar Flares Fire Double Sun Storm at Earth

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An active sunspot is amping up the sun's activity, and has already unleashed two strong solar flares that triggered weekend geomagnetic storms on Earth, NASA officials say.
The M-class solar flares set off two coronal mass ejections (CMEs) that erupted from the sun on last Wednesday and Thursday (June 13 and June 14)

http://www.livescience.com/21055-solar-flares-sun-active-region.html