ASTRONOMICAL OBJECTS

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Across
  1. 2. Rotating star.
  2. 4. Orbits a star.
  3. 10. Celestial body.
  4. 11. Space rock.
  5. 14. Ringed planet.
  6. 16. Celestial event.
  7. 18. Star nursery.
  8. 19. Closest to sun.
  9. 20. Moon-related.
  10. 22. Red planet.
Down
  1. 1. Gravity well.
  2. 3. Shooting star.
  3. 5. Blue planet.
  4. 6. Bright core.
  5. 7. Earth's satellite.
  6. 8. Gas giant.
  7. 9. Icy visitor.
  8. 12. Star system.
  9. 13. Bright morning star.
  10. 14. Sun-related.
  11. 15. Tilted planet.
  12. 17. Our star.
  13. 21. Northern lights.