MEANWHILE ON THE FAR SIDE OF THE SUN: Three days ago, big sunspot AR2665 rotated off the solar disk, beginning a two-week transit of the farside of the sun. AR2665 may no longer be visible, but we know it's still active. On July 20th, a coronal mass ejection (CME) billowed over the edge of the sun, signaling an explosion in the sunspot's magnetic canopy:


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