It is known that no one snowflake is exactly the same as another on a molecular level; however, it turns out that all snowflakes fall into one of 35 different shapes.
A snowflake starts as a tiny grain of dust or pollen floating in a cloud. Water vapor from the air sticks to the grain and freezes, forming into a tiny hexagonal crystal.
From there, more vapor condenses on the crystal as it travels to the ground, and the snowflake's "arms" take shape.
Smithsonian reported that, though snowflakes are stunning to observe, scientists classify snowflakes and analyze how they form to better understand how crystals may be used in a host of applications, from silicon to semiconductors in computers and electronics.
Seems there’s even more reason for the sky to, "Let it snow! Let it snow! Let it snow!"