Superflares once per century

Stars similar to the Sun produce a gigantic outburst of radiation on average about once every hundred years per star. Such superflares release more energy than a trillion hydrogen bombs and make all previously recorded solar flares pale in comparison. This estimate is based on an inventory of 56450 sun-like stars. It shows that previous studies have significantly underestimated the eruptive potential of these stars. In data from NASA’s space telescope Kepler, superflaring, sun-like stars can be found ten to a hundred times more frequently than previously assumed. The Sun, too, is likely capable of similarly violent eruptions.
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