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