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A Green Flash from the Sun
01/04/11
Many think it is just a myth. Others think it is true but its cause isn't known. Adventurers pride themselves on having seen it. It's a green flash from the Sun. The truth is the green flash does exist and its cause is well understood. Just as the setting Sun disappears completely from view, a last glimmer appears startlingly green. The effect is typically visible only from locations with a low, distant horizon, and lasts just a few seconds. A green flash is also visible for a rising Sun, but takes better timing to spot. A dramatic green flash, as well as an even more rare blue flash, was caught in the above photograph recently observed during a sunset visible from Teide Observatory at Tenerife, Cannary Islands, Spain. The Sun itself does not turn partly green or blue -- the effect is caused by layers of the Earth's atmosphere acting like a prism. Credit & Copyright: Juan José Manzano (Grupo de Observadores Astronómicos de Tenerife)
A Green Flash from the Sun
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