Hyperactive Sun Fires Off 3 Major Solar Flares in 1 Day

SPACE.com
Hyperactive Sun Fires Off 3 Major Solar Flares in 1 Day
On May 13, 2013, an X2.8-class flare erupted from the sun -- the strongest flare of 2013 to date. This NASA image shows a close-up of the flare as seen by the Solar Dynamics Observatory in the 131 angstrom wavelength.
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