The sun and solid objects in the solar system (planets, comets, asteroids, meteorites, interplanetary dust) are discussed with a geochemical perspective. What does their present-day composition tell us about the origin and evolution of the solar system? The lecture first introduces the basic facts of the terrestrial and giant planets, as well as comets and asteroids, as mainly gained from modern planetary missions. The chemical and isotopic composition of meteorites, being the most primitive material available for study, is a further major topic.
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