X-Rated: Sun Erupts With a Powerful Solar Flare : Discovery News

Ever since active region 1515 (AR1515) arrived on the solar scene, it's been crackling with flare activity. As if to upstage the Higgs boson announcement this week, AR1515 even blew its top on Monday, erupting with an M5.6 solar flare -- that was just shy of the energy of the most powerful type of flare.

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