Two active regions rotating into view demonstrated quite clearly that they were ready for action (Nov. 11-13, 2013). The regions, viewed in a wavelength of extreme ultraviolet light, were spurting and... more 
Two active regions rotating into view demonstrated quite clearly that they were ready for action (Nov. 11-13, 2013). The regions, viewed in a wavelength of extreme ultraviolet light, were spurting and flaring in a rapid-fire style as their tangled magnetic fields struggled against each other. Towards the end a prominence near the upper left erupted while a flare, seen as a white flash, burst from the leading region. Credit: Solar Dynamics Observatory/NASA. less 
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Yahoo News | Photo By Solar Dynamics Observatory/NASA.
Mon, Nov 25, 2013 7:00 AM EST