Four Large Flares in 48 Hours

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A very energetic active region right at the Sun’s edge blasted out four X-class flares (largest class) in two days (May 13-15, 2013), as well as several less flares. The active region is rotating around so that it will be facing Earth in about a week. The flares, observed in extreme UV light by the Solar Dynamics Observatory, are seen as bright flashes. They were: an X1.7 flare on May 13 at 02:21 UT; an X2.8 flare on May 13 at 16:07 UT; an X3.2 on May 14 at 01:46 UT; and an X1 on May 15 at 01:44 UT .

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