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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Telašćica Nature Park, Dugi Otok, Croatia
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Black History Month
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Fibonacci Day
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Feel the spray in Monterey
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Fall colors below Mount Sneffels near Ridgway, Colorado
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The ruins of a Maya superpower
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Peña Roya beech forest, Moncayo Natural Park, Aragon, Spain
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One giant leap for penguins
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Behold the perfect cone
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The frog prince?
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Frog Month
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International Day of the Worlds Indigenous Peoples
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At ease, it’s Armed Forces Day
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World Oceans Day
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Party like it’s 5779
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A herd of impalas, Londolozi Game Reserve, South Africa
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Huntington Beach Pier, California, at sunset
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Happy World Laughter Day
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Next stop, Tofino
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Aurora borealis
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Celebrating National Dentist Day
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Rays on parade
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Vermilion Cliffs National Monument
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Happy Astronomy Day!
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Struck by Southwestern beauty
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A species no longer at risk
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Big-wave hunters watch Nazaré
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Honoring the first American woman in space
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On the wings of the Wright brothers
Bing Wallpaper Gallery

