Today's Image

UFO cloud

Flying saucer like cloud in blue sky over gray mountains with rusty mining equipemnt in foreground.
Image via Karen Racette.

It looks a lot like a UFO … but it’s what’s called a lenticular cloud. These lens-shaped clouds typically form where stable, moist air flows over a mountain, and they can appear and disappear quickly. Karen Racette captured this one floating over Butte, Montana, on October 7, 2019.

More photos of lenticular clouds, plus a word about how they form.

EarthSky 2020 lunar calendars are available! They make great gifts. Order now. Going fast!

October 16, 2019
Today's Image

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