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A Sun Pillar Over North Carolina
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A Sun Pillar Over North Carolina
Credit & Copyright: Terry Holdsclaw
Explanation: Have you ever seen a sun pillar? When the air is cold and the Sun is rising or setting, falling ice crystals can reflect sunlight and create an unusual column of light. Ice sometimes forms flat, six-sided shaped crystals as it falls from high-level clouds. Air resistance causes these crystals to lie nearly flat much of the time as they flutter to the ground. Sunlight reflects off crystals that are properly aligned, creating the sun-pillar effect. In the above picture taken in 2007 January, a sun-pillar reflects light from a Sun setting over Lake Norman, North Carolina, USA.

Note : APOD Editor to Speak in New York on Jan. 2

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Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (USRA)
NASA Web Site Statements, Warnings, and Disclaimers
NASA Official: Jay Norris. Specific rights apply.
A service of: LHEA at NASA / GSFC
& Michigan Tech. U.

Russkii tekst
Based on Astronomy Picture Of the Day
Publikacii s klyuchevymi slovami: Sun Pillar - solnechnaya kolonna
Publikacii so slovami: Sun Pillar - solnechnaya kolonna
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