Ch. 19:  Meteorites, Asteroids, Comets
•Small bodies, not geologically active
•“Fossil” record of early solar system
–Asteroids
•Mostly from region between Mars and Jupiter
•Left over small debris from accretion, never assembled into a large planet
•Meteorites come mostly from asteroids
–Comets
•“Stored” on large elliptical orbits beyond planets
•Thought to be “planetesimals” from Jovian planet region, almost ejected from solar system in its early history
•Brought water to earth, cause meteor showers
•Meteorites are “asteroids” fallen to Earth
•Pluto, Kuiper Belt Objects