The science behind those viral videos of freezing soap bubbles

It took a YouTube video, a walk-in freezer kept at negative 20 degrees Celsius, and some very cold-tolerant engineering students for researchers to finally figure out why freezing soap bubbles resemble glitter in a snow globe. The trick itself is a popular winter science experiment when temperatures dip below freezing: head outside, blow a soap bubble, gently plop it onto some snow or ice, and watch as crystals dance around on the film until the entire thing is a delicate ice ball. It’s v