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Asteroids, Comets, and Meteors
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Dwarf Planet
Composition: Rock, ice, Origin: Kuiper Belt, asteroid belt, or scattered disc, Notable examples: Pluto, Eris, Ceres
Trans-Neptunian Object (TNO)
Composition: Mostly ice and rock, Origin: Outer Solar System beyond Neptune, Notable examples: Eris, Sedna, Quaoar
Oort Cloud Object
Composition: Icy planetesimals, Origin: Spherical shell surrounding the solar system, Notable examples: Comet Hale-Bopp originated here
Comet
Composition: Ice, dust, organic compounds, Origin: Outer Solar System, Notable examples: Halley's Comet, Comet Hale-Bopp, Comet 67P/Churyumov-Gerasimenko
Meteoroid
Composition: Rock, iron, or stony-iron, Origin: Asteroids or comets, Notable examples: The Sylacauga meteorite, The Chelyabinsk meteor
Near-Earth Object (NEO)
Composition: Various, including rock and metal, Origin: Inner Solar System, Notable examples: 433 Eros, 99942 Apophis, Bennu
Asteroid
Composition: Rock and metal, Origin: Remnants from the early solar system, Notable examples: Ceres, Vesta, Eros
Kuiper Belt Object (KBO)
Composition: Ices, rock, Origin: Region beyond Neptune, Notable examples: Pluto, Haumea, Makemake
Meteor
Composition: Same as meteoroids, Origin: Entering Earth's atmosphere from outer space, Notable examples: The 2013 Russian meteor event, The Perseids, The Leonids
Meteorite
Composition: Iron, stony, stony-iron, Origin: Surviving pieces of meteoroids or asteroids that land on Earth, Notable examples: Sikhote-Alin, Campo del Cielo, Hoba
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