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Comets, Asteroids and Meteors Asteroids • Large Rocks in space (smaller than Planets) that orbit the Sun • Most are located between Mars and Jupiter “Asteroid Belt” Probably a Planet that never formed Because of Jupiter’s gravity Ceres • The largest Asteroid • In the Asteroid Belt Meteoroids Smaller “Rocky” objects in Space Come from Asteroids Meteors Small rocks or particles that burn in the earth’s atmosphere. “shooting star” “falling star” Meteor Shower • Large number of meteors (usually when passing through the tail, or trail of a comet) Meteorites • The rocks that hit the Earth Types: Stony, iron, Stony Iron Comets • The “Dirty Snowballs” of the Solar System • About the size of a Mountain • Made of Ice, rock and dust (Has nucleus, coma, tail) • Some orbit past Pluto • Birth Place: past Pluto – “Oort Cloud” • Grows a tail when it is near the Sun Tail always points away from the Sun. Most Famous Comet • Halley – Orbits the Sun once every 76 years. Will return in 2061