The Planets Crossword

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Across
  1. 1. What lights up the world at day time
  2. 3. A collection of stars, dust and gas
  3. 5. What lights everything up at night
  4. 7. A rocky object in Space
  5. 8. Cannot be seen from earth without a telescope
  6. 10. A big, bright burning ball
  7. 11. Where everything, including space, exists
  8. 13. The biggest in space
  9. 15. To move around another planet
  10. 17. A small frozen mass of gas, dust, and ice
  11. 18. The red planet
Down
  1. 1. Where all of these words exist
  2. 2. The brightest planet in the solar system
  3. 4. A person who explores space
  4. 5. The planet closest to the sun
  5. 6. The 8th planet from the sun
  6. 9. The planet with the most rings around it
  7. 12. The only known planet with life
  8. 14. What astronauts go to space in
  9. 16. The word that comes before system "..... System"