https://youtube.com/watch?v=9Lpspv2kLRI%3Fversion%3D3%26rel%3D1%26fs%3D1%26autohide%3D2%26showsearch%3D0%26showinfo%3D1%26iv_load_policy%3D1%26wmode%3Dtransparent

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