A 22-degree halo is a ring of light that forms around the Sun or Moon when its light is refracted through hexagonal ice crystals found in high-altitude cirrus clouds. These crystals act like tiny prisms, bending the light at a ...
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A 22-degree halo is a ring of light that forms around the Sun or Moon when its light is refracted through hexagonal ice crystals found in high-altitude cirrus clouds. These crystals act like tiny prisms, bending the light at a ...