Jan. 19, 2012: A powerful M2-class solar flare erupts from the sun in this image from NASA's Solar Dynamics Observatory. Read more: http://www.foxnews.com/scitech/2012/01/20/massive-solar-flare-headed-toward-earth-may-spark-celestial-light-show/?intcmp=features#ixzz1k68lZgN1
A powerful flare erupted from the sun Thursday, Jan. 19, unleashing a plasma wave that may supercharge the northern lights for skywatchers in high latitudes this weekend.
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