Green Flash and Super Moon
On May 6 the much-touted super moon, the largest full moon of 2012, rose over this peaceful harbor near the La Perdrix lighthouse on the coast of Brittany, France. The rise of the moon was preceded by a green flash, captured in the first frame of a time lapse video recorded that night. This two-second exposure shows the strongly colored flash to the left of the lighted buoy near the center. Green flashes for the sun and moon are caused by atmospheric refraction enhanced by long, low sight lines and strong atmospheric temperature gradients often favored by a sea horizon.
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—Laurent Laveder, www.pixheaven.net