SPACECROSSWORD

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Across
  1. 2. Space distance unit (9).
  2. 4. Space rock orbiting the sun (8).
  3. 5. Universe as an ordered whole (6).
  4. 9. Planet with rings (6).
  5. 11. Our home planet (5).
  6. 13. Largest planet (7).
  7. 15. Star nursery (6).
  8. 17. Between stars (12).
  9. 18. Tail of ice and dust (5).
Down
  1. 1. HOLE Object with intense gravity (10).
  2. 3. Instrument to see faraway stars (9).
  3. 6. Hunter in the sky (5).
  4. 7. Famous spacecraft exploring space (7).
  5. 8. Power source of stars (6).
  6. 10. Bright, distant object powered by a black hole (6).
  7. 12. Space telescope (6).
  8. 14. Milky Way, for example (6).
  9. 16. Force pulling us down (7).