Illinois Weather Trivia for November 14th

Ice crystals sometimes act as prisms in the sky. If the Sun is positioned right, they can bend light rays and reflect them back to the light source. This causes a display known as a "sun pillar". Sun pillars are most likely around sunrise or sunset. They appear as columns of bright light extending upward or downward from the Sun. is the U.S. government's official web portal to all federal, state and local government web resources and services.
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  • Page last modified: 13-Sep-2010 5:47 PM UTC