They might look like spaceships from a retro sci-fi movie, but these strange shapes hovering above the mountains in Patagonia are of earthly origin. These are lenticular clouds, named after their lens-like shape. They form near hills and mountains where moist air is pushed up and over the peaks, cooling as it rises and condensing into water droplets. As wind blows over the mountains it can create a series of waves in the air, and these unusual clouds form in the crest of those waves.
World Meteorological Day
Today in History
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Walton Lighthouse, Santa Cruz, California
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Maloja, Switzerland
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The Spirit of Harlem by Louis Delsarte
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A monster view in Scotland
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World Oceans Day
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A treaty for science
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We did not invent this, honest
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The Guggenheim Bilbao turns 25
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There’s a dog in there somewhere
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A circular celebration
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Happy Thanksgiving
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National Park Week: Everglades National Park
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Happy Presidents Day
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National Aviation Day
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National Mountain Climbing Day
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It s not always sunny in Abu Simbel…
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American Wetlands Month
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Summertime in Alaska