Stellar Crystals
Stellar crystals are born at temperatures near -15 degrees C, and are among the most common type of snowflakes. They are as delicate as they look because large flakes tend to become broken by wind and midair collisions with other crystals. Under ideal conditions several stars my join to form large snowflakes.
The series is based on the 1951 International Commission on Snow and Ice classification system. The commission produced a fairly simple and widely used classification system for solid precipitation. This system defines the seven principal snow crystal types as plates, stellar crystals, columns, needles, spatial dendrites, capped columns, and irregular forms. To these are added three additional types of frozen precipitation: graupel, ice pellets, and hail. The classification is the least complicated in a series of snow classification systems. The most complex classification scheme, an extension of Ukichiro Nakaya's work, was published by meteorologists C. Magono and C. W. Lee in 1966. Their system included 80 different snow crystal types. Twenty years ago I used the international classification in an Independent Physics Field Study where I observed snowflakes for the winter and developed correlations with surface and lower atmospheric conditions. Today, the classification system is used here to find structures in nature that look similar to the snow referenced in the cache name. However, this cache is placed with a stellar view.
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