A Big Hole in the Sun's Atmosphere

Source - Space Weather News for Nov. 21, 2016: http://spaceweather.com

RETURN OF A BIG CORONAL HOLE:  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 turning toward Earth again. Forecasters expect the solar wind to reach Earth during the late hours of Nov. 22nd with minor G1-class geomagnetic storms possible on Nov. 23rd.

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