The solar system

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Across
  1. 5. planets that orbit around other stars
  2. 10. smallest and closet planet from the sun
  3. 11. model of sun centered solar system
  4. 15. unit used to measure large distances within the solar system
  5. 17. third planet for earth
Down
  1. 1. model of earth centered solar system
  2. 2. second planet outward from the sun
  3. 3. seventh planet from the sun
  4. 4. fourth planet from the sun
  5. 5. life on other worlds
  6. 6. unofficial name for object 2003 VB12
  7. 7. eighth planet from the sun
  8. 8. rocky objects formed material similar to on planets
  9. 9. fifth planet from the sun
  10. 12. rocky objects orbiting within the solar system
  11. 13. dwarf planet with a thin atmosphere
  12. 14. second largest planet and sixth from the sun
  13. 16. object composed of dust and rock particles