Mars, the fourth planet from the sun, is often referred to as the "Red Planet" due to its rusty hue from the iron oxide-rich soil dust. The planet is dotted with frosty dunes, largely located in the high latitudes of the northern plains. Mars" atmosphere is composed of nearly 96% carbon dioxide, which is why carbon ice forms on the surface. These dunes showcase the dynamic interaction between Mars" thin atmosphere, its surface, and seasonal temperature changes.
Frost-covered dunes on Mars
Today in History
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Vatican City with St. Peters Basilica
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Mont-Saint-Michel, Normandy, France
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A goldie gala
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Palace of Westminster, London, England
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Eye of the cave
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Nomads of the Gobi
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Lake Magadi, Kenya
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National Merry-Go-Round Day
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Hang Sơn Đoòng Cave, Vietnam
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Road-trip worthy attraction in the heartland
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Swim city
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The Old City of Bern
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Where is this wintry road?
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San Francisco Bay salt flats
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In the Navajo Nation for Code Talkers Day
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Duomo Santa Maria del Fiore, Florence
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Native American Heritage Day
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Earthrise on Moon Day
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The Elbe in Dresden, Germany
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Back to the nest
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Mid-Autumn Festival
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Carnival of Venice
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Arbor Day
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At the shore of an inland sea
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Kjell Henriksen Observatory
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Muniellos Nature Reserve
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Don t go chasing waterfalls
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Don t forget—it’s World Elephant Day
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A look at Uranus, seventh planet from the sun
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Pretty, pretty…butterfly?