There must be some definite cause why, whenever snow begins to fall, it’s initial formation invariably displays the shape of a six-cornered starlet. For if it happens by chance, why do they not fall just as well with five corners or with seven? … Who carved the nucleus, before it fell, into six horns of ice?
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| — | From “on the Six-Cornered Snowflake” by Johannes Kepler, 1610 |
