Relier Pairs Mystery Writing Glossary AsteroidsVersion en ligne vocab par Denise Kesel 1 asteroid 2 meteor 3 deflect 4 orbit 5 diameter 6 velocity 7 impact 8 collision 9 atmosphere the force of one thing hitting another circling another object, like the Moon around the Earth one object hitting into another object the distance across an object 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" a rocky object in outer space speed air that surrounds a planet