Solar flares are tremendous explosions on the surface of the Sun. In a matter of just a few minutes they heat material to many millions of degrees and release as much energy as a billion megatons of TNT. They occur near sunspots, usually along the dividing line (neutral line) between areas of oppositely directed magnetic fields.
NASA’s solar observation satellite, the Interface Region Imaging Spectrograph (IRIS) witnessed this spectacular C-class two-ribbon flare. One ribbon (top) forms a linear structure, while the other ribbon (bottom) forms a closed loop.
Source:http://lmsal.com/hek/her?cmd=view-voevent-full&ivorn=ivo%3A%2F%2Fhelio-informatics.org%2FCR_IRIS_SG_C_II_JakubPrchlik_20160802_135137&rev=1
Credit: NASA/IRIS, Jakub Prchlik
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