Contact: Tilo Arnhold
Leibniz-Institut für Troposphärenforschung
Caption: This is a pine pollen corona on May 1, 2011, at near Herzberg (Brandenburg, Germany). The pollen of flowering pines forms a halo around the sun, which should be observed only with protective glasses as at a solar eclipse. Typically for pine pollen is a corona that is not circular but stretched vertically.
Credit: Photo: Manfred Heinrich, Leipzig
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