Should the KP-Index reach a 7 as predicted, the Aurora Borealis should be visible across the northern U.S, any stronger would rival what we saw back in May.
On that day, an X2.3 flare went off, and the associated coronal mass ejection (CME) rapidly developed into a full halo event, heading for Earth. (NASA/SOHO/AFP via Getty Images) A solarflare ...
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