Sunday, January 9, 2011

APOD 2.7

greenflash_manzona_big.jpg

This picture shows a rare phenomena that many believe is a myth.  This rare occurrence is called a green flash.  The flash can only be seen from distant clear horizons and only lasts a few seconds.  As seen by the picture an even rare blue flash can sometime be seen.  These color effects are caused by the earth's atmosphere acting like a prism.  

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