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Characteristics of “Planets”
•Two types of planets
–Terrestrial Planets: small, rocky material, inner solar system
–Jovian Planets: large, H, He gas, outer solar system
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•Small left-over material, “debris”, that provides “fossil” record of early conditions
–Asteroids   –  mostly between orbits of Mars and Jupiter
–Comets   –  mostly in outermost part of solar system
–Meteorites –  material which falls to earth