Space crossword

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Across
  1. 3. Dark with stars and planets
  2. 5. all our planets are in this
  3. 7. There are 8 of them
  4. 9. Our solar system
Down
  1. 1. They made dinosaurs extinct
  2. 2. How we get to space
  3. 4. We live here
  4. 5. Very Bright
  5. 6. Shines at night
  6. 8. They are only visible at night