Across
- 3. Circular movement where something turns around a point
- 4. What goes up, must come down
- 6. system A system that has at least one Sun and planets
- 7. An invisible line that is in the middle of a planet's rotation
- 8. Billions of these exist in the solar system
Down
- 1. This happens when the Earth completes 1 full orbit
- 2. A group of stars that make an image
- 5. When a planet moves around the sun