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Caltech professor of physics Kenneth Libbrecht will tell you that this has to do with the ever-changing conditions in the clouds where snow crystals form. Now Libbrecht, widely known as the snowflake guru, has shed some light on a grand puzzle in snowflake science: why the canonical, six-armed “stellar“ snowflakes wind up so thin and flat. Laboratory-grown snowflakes provide new insights into the molecular dynamics of crystal growth. Here, high voltage was used to create thin ice needles, and stellar snowf
