Astronomy 1021 Lecture Notes - Lecture 9: Comet Hyakutake, Comet Holmes, Kuiper Belt

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Meteoroid: a small to boulder-sized particle of debris in the solar system. Meteor: the bright trail left by a neutered that enters earth"s atmosphere (shooting star) Meteorite: a portion of a meteoroid that survives its passage through the atmosphere and impact with the ground. Meteorology: another word for atmospheric science , has only little to do with meteors. Asteroids and meteorites tell the same story on how our solar system was formed. Primitive: unchanged in composition since they rst formed, chondrites, cast majority. Subdivide into stony-iron(inner asteroid belt) and carbon-rich(outer asteroid belt) Show chondrules: droplets of old, unaltered, solidi ed material. Processed: a few hundred million years younger, have experienced processes like volcanism. Combination of rock and metal or differentiation, achondrites. Some meteorites are pieces of moon and mars. Halleys comet, comet hyakutake, comet hale-bopp, comet holmes, comet mcnaught. Nucleus of a comet is a dirty snowball . Deep impact mission studied the nucleus of comet tempel 1.

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