Across
- 5. first person to land on the moon
- 7. fiery ball of hydrogen and helium gas
- 8. closest planet to the sun
- 12. large clusters of stars
- 13. only planet known with life
- 14. our closest star
Down
- 1. the name of our galaxy
- 2. biggest planet in our solar system
- 3. largest dwarf planet
- 4. a planet that may have had life on it
- 6. a natural satellite
- 9. number of planets in our solar system
- 10. first planet found using a telescope
- 11. coldest in our solar system