Relier Pairs Mystery Writing Glossary AsteroidsVersion en ligne vocab par Denise Kesel 1 diameter 2 meteor 3 collision 4 velocity 5 asteroid 6 deflect 7 atmosphere 8 impact 9 orbit the force of one thing hitting another one object hitting into another object circling another object, like the Moon around the Earth air that surrounds a planet the distance across an object to cause an object to change direction after hitting something speed a rocky object in outer space a small object from space that enters the Earth's atmosphere. They often appear as glowing streaks in the sky or "Shooting Stars"