Across
- 3. object in space that orbits another object\
- 6. a movement that can keep time
- 7. A object that has been shaded and has a dark side
- 9. object in space that orbits the sun
- 10. one object that goes around another
Down
- 1. When the sun is at the center of the universe
- 2. dust and rocks
- 4. a piece of rock
- 5. are considered to be like a large, dirty snowball
- 8. pieces of dust and rock