Today's photo is a frozen soap bubble taken against a background of snow. Like snowflakes, the frosty design that forms inside each bubble is unique. The soap bubble forms the perfect sphere while the water vapor in the air inside the bubble condenses and crystalizes to create the frosty design. According to Caltech, frost crystals have similar shapes as snow crystals. These crystals resemble "fernlike stelllar dendrites" often found on snowflakes. Frozen soap bubbles are short-lived and burst and collapse within a minute or two, but they are amazing to observe.
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