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:
-
Oh, the places you’ll go
-
Happy New Year! (Again!)
-
Midsummer in Sweden
-
‘Hello’ from zero degrees longitude
-
Moody skies over Valletta
-
Cherry blossoms at the National Mall, Washington, DC
-
Pride 2025
-
Just a couple of yellow-billed hornbills
-
Gone ‘lightseeing’ in Berlin
-
Talk like a pirate—or walk the plank
-
Kirkjufell, Iceland
-
Let s get lost
-
Black-naped monarch
-
Edinburgh festivals
-
World Otter Day
-
Homeward bound
-
It s superb owl Sunday
-
World Environment Day
-
Hay, what s up?
-
Art in the chapel
-
Nubble Island’s only industry
-
Spring comes to the Palouse
-
Castilla-La Mancha, Spain
-
Great on so many levels
-
Mount Field National Park, Tasmania, Australia
-
Santorini through the clouds
-
La Rocque Harbour, Island of Jersey
-
International Day of Human Space Flight
-
Where do those colors come from?
-
Pandas pucker up for International Kissing Day