The days only get longer from here! The Northern Hemisphere marks the beginning of winter today, but the winter solstice is also the shortest day of the year. The rainbow that encircles the sun in our image, a sun halo, is above Lake Antermoia, in the Dolomite Mountains of northern Italy. Sun halos form when sun or moon light shines through ice crystals suspended in the upper atmosphere. When the light of the sun hits the crystals they serve as a prism, separating the light into individual colors of the spectrum, the same way rainbows occur after a rain shower.
Winter solstice
Today in History
More Desktop Wallpapers:
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Protecting endangered giants
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Snow on the temple
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Hello, harbinger of spring
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Merry Christmas!
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Bryce Canyon National Park, Utah
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A Eurasian lynx in Siberia
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Baddest of the badlands
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50 years of Earth Day
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Nomads of the Gobi
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Hey neighbor, it s World Space Week!
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Dr. Martin Luther King, Jr. Memorial in Washington, DC
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Arches National Park, Utah
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Wake up, it s Darwin Day
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Let’s go foraging
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Mosque-Cathedral of Córdoba, Andalusia, Spain
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Natural Bridges State Beach in Santa Cruz, California
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Aýna, Albacete, Spain
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National Park Week: Yosemite National Park, California
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A step toward freedom
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Presidents Day
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World Population Day
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International Archaeology Day
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Flag Day
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Happy Independence Day!
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Congratulations, 2019 Nobel Prize laureates!
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Into the woods
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March of the flowers
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Lake Peipus, Estonia
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National Hug Day
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New beginnings
Bing Wallpaper Gallery

