Upeita revontulia

13.09.2015, Katri Laitila

MORE AURORAS IN THE OFFING: So far, September has been a great month for auroras. A series of solar wind streams, mixed with one or two minor CMEs, has buffeted Earth’s magnetic field almost non-stop for the past two weeks. The resulting G1- to G3-class geomagnetic storms have caused displays like this:

Minoru Yoneto took the picture on September 11th from Queenstown, New Zealand. ”A big stream of solar wind gave us four lovely colors of Southern Lights,” he says.




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