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Across
  1. 1. is the name of our solar system
  2. 4. measures the distances in coordinates
  3. 6. this planet has the biggest rings in the universe
  4. 9. the first space shuttle to land on the moon
  5. 13. how many dipper constellations do we have
  6. 14. there are many moon phases
  7. 17. are caused by the gravitational pull from the earth
  8. 18. what planet is second in our solar system
Down
  1. 2. measures the height in coordinates
  2. 3. the biggest planets in our solar system
  3. 5. the name for the last 4 planets
  4. 7. named after the Greek god of the underworld
  5. 8. how many planets have rings
  6. 9. the name of the Greek god for mars
  7. 10. is the hottest planet in our solar system
  8. 11. the amount of space the sun takes up in our solar system
  9. 12. the name of the Greek god for Neptune
  10. 13. there are many equinox's
  11. 15. what planet has one satellite
  12. 16. is earths only natural satellite