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7. Lenticular Clouds Lenticular Clouds, technically known as altocumulus standing lenticularis, are stationary lens-shaped clouds that form at high altitudes, normally aligned at right-angles to the wind direction. These clouds can often be mistaken for UFOs!

7. Lenticular Clouds Lenticular Clouds, technically known as altocumulus standing lenticularis, are stationary lens-shaped clouds that form at high altitudes, normally aligned at right-angles to the wind direction. These clouds can often be mistaken for UFOs!

WIREDfrom WIRED

Weird, Rare Clouds and the Physics Behind Them

Lenticular cloud