Thursday, April 2, 2015

APOD 4.2

A Flag Shaped Aurora Over Sweden: http://apod.nasa.gov/apod/ap150330.html


In mid-March, a Coronal Mass Ejection led to one of the most intense geomagnetic storms of recent years. The result was many auroras appearing over countries near Earth's poles. This image was taken of a 50 km tall aurora appearing over Sweden. Colorful auroras are likely to continue, but this one is unusual as it is super straight, comparative to a flag. 

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