FAIRBANKS- Internet photos from around the world show last night's beautiful aurora, unfortunately, rain blocked the view from the interior. Some reports say the increase in northern lights is caused by a reversal of the Sun's north and south poles, but researchers at UAF say the event is unrelated. A solar shockwave, or coronal mass ejection (CME), caused last night's aurora. The effects of that shockwave have diminished along with chances of seeing the northern lights. The poles of the Sun are undergoing regular changes which happen every decade, and the Emeritus Director of the Geophysical Institute at UAF says the effect it creates on Earth is small.