Shining rainbow rings around the sun photographed in Finland. What caused them?

A pollen corona surrounds the partially-obscure sun in this photo taken May 30 in Turku, Finland. (Image credit: Mikko Peussa)

Something was in the air recently when a photographer in Finland snapped a stunning shot of concentric rainbow-colored rings around the sun. And it turned out that something was pollen.

Miko Peussa captured the eye-catching images on May 30 near his home in Turku. The multicolored rings are called “pollen coronas” and are caused by sunlight scattering off pollen in the water, according to The star-like sparkles that appear in and around the shining rings are individual pollen grains, which can vary in size.

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