Across
- 4. powers the sun
- 6. only takes 88 days to go around the Sun
- 7. the two days of the year with equal day and night
- 8. makes Neptune and Uranus look blue
- 13. floating rock in space
- 15. the two days of the year that are the shortest and longest
- 18. 93 million miles
- 19. second largest planet
Down
- 1. hottest planet
- 2. this is the second most common element in the sun
- 3. men landed here in 1969
- 5. can hold 1000 earths
- 9. biggest of the rocky planets
- 10. the sun is made mostly of this element
- 11. rotates on its side
- 12. Earth is at 23.5 degrees
- 14. the only spaceship to go by Uranus
- 16. has polar ice caps
- 17. now a dwarf planet