FILE - This April 12, 2012 file photo shows the northern lights near an observatory outside Fairbanks, Alaska. This year and next year are expected to offer prime viewing for the northern lights due to a peak in the cycle of solar activity that causes the lights. The Fairbanks region of Alaska is gearing up for increased tourism as visitors flock to see the colorful but elusive phenomenon. (AP Photo/Mark Thiessen, file)

Associated Press
FILE - This April 12, 2012 file photo shows the northern lights near an observatory outside Fairbanks, Alaska. This year and next year are expected to offer prime viewing for the northern lights due to a peak in the cycle of solar activity that causes the lights. The Fairbanks region of Alaska is gearing up for increased tourism as visitors flock to see the colorful but elusive phenomenon. (AP Photo/Mark Thiessen, file)
FILE - This April 12, 2012 file photo shows the northern lights near an observatory outside Fairbanks, Alaska. This year and next year are expected to offer prime viewing for the northern lights due to a peak in the cycle of solar activity that causes the lights. The Fairbanks region of Alaska is gearing up for increased tourism as visitors flock to see the colorful but elusive phenomenon. (AP Photo/Mark Thiessen, file)
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