Getting Flake-y: Why All Snowflakes Have Six Sides

NASA scientists can measure the size and shape distribution of snow particles, layer by layer, in a storm. The Global Precipitation Measurement mission is an international satellite project that provides next-generation observations of rain and snow worldwide every three hours.

Credit: NASA's Goddard Space Flight Center/Ryan Fitzgibbons

Music: "Piano Cells," Anthony Phillips, Killer Tracks.