Asteroid Definition: Most asteroids revolve around the sun between the orbits of mars and jupiter. This region of the solar system,is known as asteroid belt.astronomers had found more than 10,000.
Asteroids Holes are due to the different kind of impact done from different asteroids. Asteroid Belt=Distance between the inner and outer planets.
Asteroid Information Some Asteroids come near the orbit of earth. Some day one of these near earth asteroids could hit earth. A large asteroid hit earth 65 million years ago, it exploded making 200 KM in diameter on the Yucatan Penisula of Mexico. Debris from the explosion probably started huge fiers and destroyd much of earth forests. Scietjects have hypothyzed that as a result many species of organisms including the dinosaurs became extint. These objects called ASTEROIDS are too small and too numerous to be considered full lenghed planets.
Sources http://see.msfc.nasa.gov/sparkman/Images/Deep%20Impact.gif http://www.topnews.in/files/meteor.jpg http://www.astro.washington.edu/users/premap/images/project_images/asteroid.jpg And our text book on astronomy !!! By Carlotta and Riccardo