Space Themed Crossword

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Across
  1. 4. Hottest planet in our solar system
  2. 5. Planet famous for its prominent ring system
  3. 6. Icy object that can develop a glowing tail as it approaches the Sun
  4. 8. Natural satellite that orbits a planet
  5. 10. Largest planet in our solar system
  6. 13. Galaxy that contains our solar system
  7. 14. Powerful explosion that occurs at the end of some stars' lives
  8. 15. Huge cloud of gas and dust in space
  9. 17. Large object that orbits a star
  10. 19. Person trained to travel and work in space
  11. 20. Farthest planet from the Sun in our solar system
Down
  1. 1. Planet closest to the Sun
  2. 2. Instrument used to observe distant objects in space
  3. 3. Force that keeps planets in orbit around the Sun
  4. 7. Event where one celestial body moves into the shadow of another
  5. 9. Curved path of an object around a planet, star or other body
  6. 11. Recognisable pattern of stars as seen from Earth
  7. 12. Planet often called the Red Planet
  8. 16. Rocky object that orbits the Sun and is smaller than a planet
  9. 18. Enormous group of stars, gas and dust held together by gravity