Solar System

1234567891011121314151617181920
Across
  1. 4. a ball of hot gas
  2. 7. is the seventh planet from the sun
  3. 9. Large and rounded
  4. 11. a natural satellite
  5. 15. a group of stars
  6. 18. a scientist who studies the universe
  7. 20. is the fifth planet from the sun
Down
  1. 1. fourth planet from the sun
  2. 2. tiny planet
  3. 3. the sixth planet from the sun
  4. 5. doesn't belong in the solar system anymore
  5. 6. inhabited
  6. 8. the second closest planet to the sun
  7. 10. an icy rock
  8. 12. the furthest away from the sun
  9. 13. a collection of things in space
  10. 14. centre of the solar system
  11. 16. the region beyond Earth's atmosphere
  12. 17. closest planet to the sun
  13. 19. the path of a celestial body