Across
- 4. the coldest planet
- 8. the dwarf planet closest to earth
- 9. what astronauts travel in
- 10. people thought it was made of cheese
- 11. how many planets are in our solar system?
- 13. the smallest planet.
- 14. the hottest planet
- 15. the term used for a line of asteroids.
Down
- 1. sucks everything into unknown blackness
- 2. what do astronauts use to mark territory?
- 3. the biggest planet
- 5. has lots of rings but no wedding ring
- 6. a flying rock
- 7. the top of a rocket
- 8. remains of asteroid crashes
- 10. the planet aliens are thought to live on.
- 12. keeps things on the ground