The U.S. Postal Service will issue a pane of 20 Polar Lights 41-cent commemorative postage stamps in two designs often known as auroras.
The polar lights are a luminous glow seen in the night sky at high latitudes surrounding the north and south magnetic poles. Throughout history the polar lights have inspired a colorful folklore; today they are the focus of many nations.
The two First-Class stamps on this pane of 20 were also featured on the International Polar Year 2007-2008 souvenir sheet issued this past February.
Date of issue: 1 October 2007