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• NASA probe will help reveal how sun and planets interact

  Beginning this year, NASA will launch four satellites equipped with technology from KTH Royal Institute of Technology. The mission: to study the microphysics of magnetic reconnection, the fundamental process that happens during such solar atmosphere events as solar flares and coronal mass ejections.

• Team solves mystery at heart of "black" auroras

  While our understanding of how the aurora's shimmering curtains of colour are formed, scientists have struggled to explain the black patches between the bright beams. Now Swedish and British scientists have discovered what happens at the heart of these so-called "black aurora".