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Across
  1. 2. has 27 moons
  2. 5. the second smallest planet in our solar system
  3. 7. a monkey who successfully was sent to space
  4. 9. a program to see if humans could function in space.
  5. 11. when they hit the surface of a planet or a moon it is considered a
  6. 13. Earth’s sister planet
  7. 14. the only planet with life
  8. 15. a minor space object that has entered the Earth's atmosphere
  9. 16. has the big red spot
  10. 17. Jupiter’s volcanic moon
  11. 18. last person to walk on the moon
  12. 20. these planets haven’t ¨Cleared their neighborhood¨
  13. 21. became the first American woman in space aboard the space shuttle
  14. 22. the second person to walk on the Moon
  15. 24. larger than meteoroids
Down
  1. 1. first animal/dog in space
  2. 3. has over 30 rings
  3. 4. NASA's second human spaceflight program
  4. 6. the first mission to land a man on the moon
  5. 8. an animal that was sent into space on 9 March 1961
  6. 9. about the size of a pebble
  7. 10. neptune’s largest moon
  8. 11. named after the roman god of Thieves
  9. 12. It is the only moon in the entire solar system with a dense atmosphere
  10. 18. Jupiter's moon that is very close to Earth's moon
  11. 19. first astronaut in space
  12. 23. coldest planet in the solar system