Across
- 4. "red planet"
- 5. when a bunch of meteors fall
- 8. first successful moon launch
- 9. the telescope that is in space
- 11. the planet closest to the sun
- 13. the planet farthest from the sun
- 14. big rock in space
- 15. a big ball of gas in the middle of our solar system
- 17. a rover on mars
- 18. a planet that spins on its side
Down
- 1. National Aeronautics and Space Administration
- 2. the only planet with life
- 3. a well known dwarf planet
- 6. a rocket that lands like a plane
- 7. the largest planet
- 8. a strip of asteroids between mars and Jupiter
- 10. a planet with thousands of rings
- 12. the hottest planet
- 16. the only thing in our system that we have been to besides earth