July 9, 2012
The most powerful solar flare of the summer so far erupted from the sun Friday (July 6), the latest in a string of powerful storms this week from our nearest star, space weather experts say.
The sun storm occurred just after 7 p.m. EDT (2300 GMT) and registered as a class X1.1 solar flare — one of the strongest types of solar flares possible, according to the U.S. Space Weather Prediction Center (SWPC) run by NOAA and the National Weather Service.
The huge solar flare erupted from the giant sunspot AR1515, which has already fired off several other powerful storms this week. Space weather scientists were closely watching the sunspot for possible X-class flares.
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