Across
- 4. the planet we live on
- 5. the star rounds that the Earth orbits
- 7. the natural satellite of the Earth
- 9. a machine sent into orbit around a planet
- 11. the time between Sunrise and Sunset
- 12. system, the Sun together with all the planets
- 13. the time of Darkness
Down
- 1. the dark figure or area of something
- 2. rotation around something
- 3. to travel around something
- 6. the act of turning around
- 8. an imaginary line
- 10. a large group of stars