STRONGEST FLARE OF THE YEAR: A sunspot hiding behind the sun’s northeastern limb erupted on May 13th at 02:17 UT, producing the strongest solar flare of the year so far. NASA’s Solar Dynamics Observatory recorded the extreme UV flash from the X1.7-class eruption:
Coronagraphs onboard the Solar and Heliospheric Observatory (SOHO) tracked a bright CME emerging from the blast site: movie. No planets were in the line of fire. However, the CME appears to be on course to hit NASA’s Epoxi and Spitzer spacecraft on May 15th.
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