Across
- 2. center of the solar system
- 4. chunk of rock or metal that orbits the sun
- 5. a large body of rock or gas that orbits around a star
- 8. the path the object takes as it moves around another object in space
- 10. four planets closest to the sun
- 11. smallest planet
Down
- 1. four planets farthest from the sun
- 3. the sun and the objects that orbit around it
- 6. largest planet
- 7. hot ball of glowing gases
- 9. the force of one object's pull on another
- 12. large ball of ice and dust that orbits the sun