Pluto

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Across
  1. 4. the year Mike Brown and his team discovered a planet lager than Pluto
  2. 5. the year Pluto was discovered
  3. 7. the year the International Austronomical Union was held
  4. 8. age of Tombaugh when he discovered Pluto
  5. 9. the number of planets there used to be
  6. 11. the person who discovered Pluto
  7. 14. where the International Austronomical Union was held
  8. 16. the number of planets in the now
  9. 17. the size of Pluto (km)
  10. 18. the original name of Pluto
Down
  1. 1. The official kind of Pluto
  2. 2. a planet that is no longer a planet
  3. 3. the year the largest moon was discovered
  4. 6. Where the Lowell Observatory is
  5. 10. Pluto and its moon is a large example of this
  6. 12. the name of the planet Mike Brown and his team discovered
  7. 13. the month the International Austronomical Union was held
  8. 15. the largest moon