Anyone stargazing this past Sunday may have seen a ring around the moon, also known as a lunar halo, caused by ice crystals that refract the moonlight in earth’s upper atmosphere. Continue reading to watch a time-lapse video of the phenomena. The shape of the ice crystals focuses the refracted light, thus forming into a into a ring-like structure around the moon. [via DailyWorldBuzz ]
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Ring Around the Moon Identified as Lunar Halo