The Space Race Crossword Puzzle

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Across
  1. 3. space explorers from the USSR
  2. 4. the first person to orbit earth
  3. 6. losers of the space race
  4. 8. US space exploration agency
  5. 9. winners of the space race
  6. 11. first successful moon landing
Down
  1. 1. the belief system of the USSR
  2. 2. space explorers from the US
  3. 3. the belief system of the US
  4. 5. "one small step for a man, one giant leap for mankind" was said by...
  5. 7. first artificial satellite
  6. 10. time with economic tension between the US and the USSR