Today we"re traveling to outer space to catch a glimpse of the Caloris Basin on the planet Mercury. This small planet—about the size of Earth"s moon—is riddled with craters, but none as spectacular as the Caloris Basin. One of the largest impact craters in the solar system, Caloris is about 950 miles across and ringed by mile-high mountains.
Mercury in retrograde
Today in History
More Desktop Wallpapers:
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The Crown of the Continent
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World Teachers Day
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Rooftops in the walled city of Urbino, Italy
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Is there a bug-egg emoji for this?
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Happy 300th, NOLA!
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Dog days of summer
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National Napping Day
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Seattle Central Library, Seattle, Washington
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Happy World Meteorological Day
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The aftermath of a meteorite
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Atrani, Amalfi Coast, Italy
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Happy Thanksgiving
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Autumn in the Prosecco Hills
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It s Teacher Appreciation Week
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World Olive Tree Day
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Red fox in the Netherlands
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A summertime light show
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Beyond Walls for World Refugee Day
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A silent witness to history
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National Park Week continues
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Sparkling ice diamonds on a black sandy beach
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Into the woods
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American bison
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Chestnut-eared aracari in the Pantanal, Brazil
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Happy Mother s Day!
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Happy Cinco de Mayo!
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Where can you find a red fox?
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Grand Canyon National Park turns 105
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Boxing Day in East Yorkshire, England
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Pont Alexandre III, Paris, France