Space crossword puzzle

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Across
  1. 1. first human to be on the moon
  2. 5. third from the sun
  3. 8. Unidentified Flying Object
  4. 9. the red planet
  5. 11. the galaxy we live in
  6. 12. the biggest planet
  7. 13. space rocks
Down
  1. 2. the one with the rings
  2. 3. National Aeronautics and Space Administration
  3. 4. we see this at night
  4. 6. has the 8 planets
  5. 7. The first to reach the moon
  6. 10. a dwarf planet
  7. 14. what made space travel possible