We"ve reached perihelion! Two weeks after winter solstice the Earth"s orbit is closer to the sun than at any other time of year—a result of the Earth"s elliptical orbit. You may think, "If we"re so close to the sun, why can"t I feel the heat?" Well, that"s because we"re only receiving about 7% more solar energy than normal, which doesn"t really have much impact on the weather.
Earth at Perihelion
Today in History
More Desktop Wallpapers:
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Labor Day parade in 1915 Chicago
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Happy trees = Clean air
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Kiteboarding and windsurfing in Croatia
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Death Valley National Parks Anniversary
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World Wildlife Conservation Day
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Autumn comes to the Porcupines
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European hedgehog, France
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Grand finish of Le Tour
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Navajo Bridge in Marble Canyon
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Winterpret on ice
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A city of bridges
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Winter Olympics in Beijing
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Patriot Day
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Chicagohenge
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Composite image of a lunar eclipse
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Acadia transformed
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Visiting Ahch-To on Star Wars Day
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Camels at Jaisalmer, Rajasthan, India
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National Bison Day
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Protect your neck
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Celebrating World Wildlife Day
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Southern gemsbok in the savannah, Botswana
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Bridge of Sighs in Venice, Italy
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Provence blooms with lavender at Sénanque Abbey
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Cecropia leaf and lobster claw petals in Mexico
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Rock House in Hocking Hills State Park, Ohio
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Toledo, Spain
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Heceta Head Light, Florence, Oregon
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Summer winds down in the Hamptons
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Shark Awareness Day
Bing Wallpaper Gallery

