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Sun dog

A sun dog or sundog (scientific name parhelion) is a relatively common atmospheric optical phenomenon associated with the reflection/refraction of sunlight by the numerous small ice crystals that make up cirrus or cirrostratus clouds.

Note: This article excerpts material from the Wikipedia article "Sun dog", which is released under the GNU Free Documentation License.

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last updated on 2014-10-23 at 12:14 pm EDT

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