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Classification of Meteors

How are meteors categorized? What are the two main categories, and what subdivisions exist within them?

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Meteorites are classified according to their composition. Two broad categories exist: stony and iron. Iron meteors reveal Widmanstatten patterns in their interiors. These patterns indicate crystals of nickel-iron alloys have cooled slowly enough ...

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Basis for the categories of classification of meteors and subdivisions within them.