The odds of two snowflakes looking exactly alike within the lifetime of the Universe are indistinguishable from zero.
Wilson Bentley 'The Snowflake Man'
The Snowflake Man--Step back in time to learn about the man who taught us that "no two snowflakes are alike." We travel to Jericho, Vermont to recreate the life of a simple, self educated farmer that took amazing pictures of snowflakes (still found on many products today) and after decades of work, became known the world over as the "Snowflake Man."
Types of Snowflake If you look closely at falling snow, you can see a great many different crystal shapes.