Across
- 2. shrinking left
- 4. A small planet collided with earth
- 7. growing right
- 9. sun blocked
- 12. barely noticeable
- 14. pattern of weather
- 15. hole from something impacting a space body
- 16. orbit
- 18. going in shadow
- 19. dark colored, filled with lava craters
Down
- 1. extra high tide
- 3. light colored, old and cratered areas
- 5. imaginary line through poles
- 6. maximum and minimum hours of sunlight
- 8. caused the seasons
- 10. moon blocked
- 11. lightest shadow
- 13. causes day and night
- 17. darkest shadow