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Mostly seen above mountains or hills, lenticular clouds are extraordinary clouds that, due to their smooth, saucer-like shape, are often mistaken for UFOs. Lenticular clouds are formed when a current of moist air is forced upwards as it travels over a mountain, causing the moisture to condense and form a cloud.   They can appear as if they're sitting stationary, hovering above our planet in an unusual fashion for hours or even days.

Mostly seen above mountains or hills, lenticular clouds are extraordinary clouds that, due to their smooth, saucer-like shape, are often mistaken for UFOs. Lenticular clouds are formed when a current of moist air is forced upwards as it travels over a mountain, causing the moisture to condense and form a cloud. They can appear as if they're sitting stationary, hovering above our planet in an unusual fashion for hours or even days.