To the moon and back

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Across
  1. 2. "That's one small step for man,one giant ... for mankind"
  2. 3. Time Apollo 11 mission last
  3. 7. Number of Apollo missions after Apollo 11
  4. 8. Process of making an aircraft airborne
  5. 10. Name of the first animal to go into space
  6. 11. Where Armstrong step down
  7. 12. The world's first artificial satellite
Down
  1. 1. "We choose to go to the moon in this decade not because is...,but because is hard"
  2. 4. What Apollo 17 set up on the moon
  3. 5. What Armstrong planting on the moon
  4. 6. The other participant in the space race apart from the Americans
  5. 9. The first human being to travel into space
  6. 13. Year of the Apollo 11 mission