Space exploration

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Across
  1. 2. most common amount of time spent in Space
  2. 4. The program that preceded apollo
  3. 6. is constantly recycled on a Spacecraft
  4. 8. first satellite launched into orbit
  5. 9. The first man to walk on the Moon
  6. 10. not present in Space but needed on earth
  7. 11. gave famous speech "we chose to go to the moon"
Down
  1. 1. caused mission Apollo 13 to explode
  2. 3. Dust on the Moon
  3. 5. a bad idea due to lack of airflow
  4. 7. first country to put a man into space