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