Space Crossword

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Across
  1. 2. planet pluto is a
  2. 5. the number of moons in our solar system
  3. 6. the sound in space
  4. 9. the big dipper, southern cross etc
  5. 10. planet furthest planet from the sun
Down
  1. 1. titan orbits this planet
  2. 3. how long it takes for the moon to orbit earth
  3. 4. how many moons earth has
  4. 7. the only known planet with life
  5. 8. this planet has the most volcanoes