This is the APOD from February 12, 2013. It could have only been seen by a camera because of the faint nature of aurora's. The green could have been seen by the naked eye but the red was seen after a 20 second exposure. This picture was taken near Anchorage, Alaska. The stars above also contain the Pleiades and multiple constellations that can be seen when you hover over the image on the original website. Aurora's are caused by very energetic particles that are influenced by the sun's solar winds.
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