Image Credit & Copyright: LeRoy Zimmerman (TWAN)
Explanation: A remarkably intense auroral band flooded the northern
night with shimmering
colors on December 7. The stunning
sequence captured here was made with a camera fixed to a tripod under cold,
clear skies near Ester, just outside of Fairbanks, Alaska. Left to right,
spanning a period of about 30 minutes, the panels follow changes in the dancing
curtains of northern lights extending to altitudes of over 100
kilometers in a band arcing directly overhead. The panels span 150 degrees
vertically, covering about 500 kilometers of aurora laying across the sky from
edge to edge. The auroral activity was triggered by a moderate level geomagnetic
storm, as a high speed solar wind stream buffeted planet
Earth's magnetosphere.
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