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View stunning SlideShares in full-screen with the new Android app!View stunning SlideShares in full-screen with the new iOS app!
Asteroids Rocky, metallic objects that orbit the Sun Too small to be considered planets Can range in size from 1,000 km to the size of pebbles Most asteroids are found in the Asteroid Belt Between Mercury and Jupiter
Comets Made of frozen gas and frozen water Invisible except when near the Sun Their orbits take them far outside the orbit of Pluto Most are located in the Oort Cloud
Meteoroids Little chunks of rock and debris in space Become meteors (shooting stars) when the fall through a planet’s atmosphere. Chunks that hit the ground are called meteorites
Interplanetary Dust Formed in the chemical reactions of interstellar molecular clouds Nitrogen and deuterium enrichments