Winter Sky

— NPR's Ivan Amato reports that the winter sky can be just as beautiful as the summer's...if you know what to look for. The increased number of ice crystals in the sky results in many optical effects this time of year. Sunlight refracted through hexagonal crystals can form circles around the sun, columns of light, a pattern like a bird's wings...even an exclamation point. Winter sunrises and sunsets also can be more colorful thanks to the season's clearer air.

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