M class flare

Powerful Solar Flare Producing Sunspot Facing The Earth

  An active sunspot-filled region on the sun, AR 1504, rotated into our view on June 10, 2012. So far, the sunspot region fired off two M-class flares, and two coronal mass ejections (CMEs) on June 13th and 14th. The final flare lasted a long time for a CME, nearly 3 hours. It peaked around

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