LIGHT PILLAR PICTURES: Mysterious Sky Shows Explained

LIGHT PILLAR PICTURES: Mysterious Sky Shows Explained
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February 18, 2009--"The aliens are coming!" photographer Aigar Truhins's son exclaimed upon seeing these multicolored "trumpets" of light in Sigulda, Latvia, on December 28, 2008.

Aided by abundant ice crystals formed during a European cold snap, these light pillars--like other trumpet-shaped pillars--may have been formed by long, thin crystals, rather than the horizontal crystal plates that form the more spike-like light pillars, according to physicist Les Cowley.

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— Photograph courtesy Aigar Truhins
 
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