The Big Coronal Hole on the Sun is Back Again — The Event Chronicle

And could spark strong geomagnetic storms and Arctic auroras as it is turning toward Earth again. At the end of October, a hole in the sun’s atmosphere lashed Earth’s magnetic field with solar wind, sparking moderately-strong geomagnetic storms and almost a full week of Arctic auroras. News flash: It’s back. The same “coronal hole” is…

via The Big Coronal Hole on the Sun is Back Again — The Event Chronicle

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