Rare U-Shaped Rainbow Seen

A British astronomer, Dr. Jaqueline Mitton, snapped a photograph of an upside-down rainbow this week in Cambridge. The scientist says she has never seen anything like it.

Upside-down rainbows can occur when skies are blue and ice crystals are present. They do not need rain or clouds. These strange rainbows are most common in extremely cold climates. They can also be seen from airplanes.

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  1. I heard somewhere (I can’t remeber where) that all rainbows are a full circle,but most can only be seen as an arc unless are viewed from above. Pretty cool though

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