Amazing crossword

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Across
  1. 3. Earth has only one____.
  2. 4. The Earth name means the ____.
  3. 9. days
  4. 10. Earth is the ____ largest planet
  5. 12. all the planets were named after Greek and
  6. 14. This is our home planet
  7. 16. Earth is the ____ planet from the sun.
  8. 17. the ___ of Mars around the sun takes 687
  9. 18. Earth is the only planet in our solar system
Down
  1. 1. be the size of a _____.
  2. 2. Earth has no
  3. 5. happens every 26 months when Earth and Mars
  4. 6. If the Sun was the size of a door Earth
  5. 7. ____.
  6. 8. This was named after the Roman god of war
  7. 10. Mars is the planet
  8. 11. closer together
  9. 13. Earth is the only _____ planet with living. things
  10. 15. gods and goddesses but Earth is