【ＳＰＡＣＥ】

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Across
  1. 1. yellow dwarf star
  2. 2. humans live
  3. 5. gas giant and the biggest planet
  4. 6. 'no one can hear you...'
  5. 8. astronauts favourite chocolate (2 words)
  6. 10. constellation with three stars as a belt
  7. 11. closest planet to the sun
  8. 12. spins on its side, is icy
  9. 14. eighth moon of jupiter
  10. 15. also called ursa major
  11. 17. American space agency
  12. 18. Neil Armstrong was the first man on it
Down
  1. 1. the only married planet (has a ring)
  2. 3. impossible to put down
  3. 4. constellation that looks like a w
  4. 7. planet 142 million miles from the sun
  5. 9. believed to have killed dinosaurs
  6. 13. creation theory and a TV show (3 words)
  7. 16. so small they took away their planet title