The sun has unleashed an enormous X-class solar flare, temporarily triggering a radio blackout above parts of the U.S. and unleashing a hefty coronal mass ejection (CME) that will likely slam into our planet, potentially triggering vibrant aurora displays later this week. The X-class solar flare — the most powerful type the sun can produce — exploded outward from sunspot AR3842 near the solar equator at around 6 p.m. ET on Tuesday (Oct. 1). The flare had a magnitude of X7.1, making it the second most powerful solar explosion of the current solar cycle, Solar Cycle 25, which began in...