What is the ring around the sun called?

Answer

When a ring appears in the sky around the sun, it is called a halo. Halos have also been observed around the moon in the night sky.

A halo appears around the sun when thin cirrus clouds containing tiny ice crystals occur above about 20,000 feet. The sunlight is refracted by the ice crystals and produces a ring that appears 22 degrees from the sun. Most halos are bright white, but the dispersion of the light is also capable of causing a halo to have colors, sometimes with a red band toward the inside and a blue band toward the outside. Lunar halos are more likely to be white since moonlight is not as bright as sunlight. Halos appear most frequently in the winter, spring and autumn.

Q&A Related to "What is the ring around the sun called?"
I can't find any special name for the ring that is sometimes around the sun.
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Sundogs can appear around the Sun, but also appear around the Moon. In colder climates, ice crystals in the air, which appear like sparkly dust, can also create sundogs. Sundogs can
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vapor.
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The ring is not around the sun. The sun is 93 million miles away. The ring that you are seeing is caused by sunlight being refracted by ice crystals in the Cirrus clouds roughly 20,000
http://answers.yahoo.com/question/index?qid=201105...
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