Solar System and Night Sky

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Across
  1. 3. The ISS is an example of a ....
  2. 5. The outer planets are larger and ........ than the inner planets
  3. 6. The outer planets have a lot more ...... than the inner planets
  4. 13. The ........ planets are made from rock (terrestrial)
  5. 14. Our solar system formed approx. 5 ....... years ago
  6. 15. ...... pulled dust together to make our solar system
  7. 16. This at the centre of our universe
  8. 17. Big formations of ice in space
Down
  1. 1. We are in the milkyway .......
  2. 2. The closest planet to the Sun
  3. 4. This used to be classified as a planet, but is now a dwarf planet
  4. 6. This is Earth's only natural satellite
  5. 7. The planet found in between Jupiter and Uranus
  6. 8. The biggest planet in our solar system
  7. 9. This planet is found furthest away from the Sun
  8. 10. In our solar system, planets ....... the Sun
  9. 11. The ...... belt is found right at the edge of our solar system
  10. 12. The planet found in between Mercury and Earth
  11. 15. The outer planets are known as the ... giants