Across
- 2. covered with crater marks and looks like earths moon
- 5. has over 100 rings
- 6. has greenhouse effect
- 8. the study of the moon,stars,ect in space
- 11. has tilted axes
- 12. largest planet
- 13. small dark spot
- 17. the other blue planet
- 18. only planet with life
- 19. small rocky earth like terrestrial planets
- 20. a scientest who studies the earth beyond the earth
Down
- 1. what makes the planets blue
- 3. rotates on its side
- 4. the path of an object as it revolts around another object in space
- 7. one blue planet
- 9. a meteoroid that has hit earth's surface
- 10. a ball of ice and dust whose orbit is usally a long narrow eclips
- 14. nuculer fusion is happening inside
- 15. called gas giants
- 16. a chunk of rock or dust in space