On July 15, a colossal filament erupted from the sun’s northeastern limb, dramatically reshaping part of our star’s surface, albeit briefly, and unleashing a coronal mass ejection (CME) into space. The outburst was so powerful that it carved a glowing trench of hot plasma more than 250,000 miles (about 400,000 kilometers) long, roughly the distance from Earth to the moon. …
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