Space Race of the 1960s

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Across
  1. 4. Russian title for someone who goes to space.
  2. 7. The name (not number) of the first satellite sent into orbit.
  3. 8. The president who famously set the goal for the U.S. to reach the moon before Russia.
  4. 10. The most famous canine sent to space.
Down
  1. 1. The name of the United States missions to the moon.
  2. 2. The last name of the person who stayed in orbit above the moon during the Armstrong and Alrdins' spacewalk.
  3. 3. Last name of the first man in space.
  4. 5. The amount of astronauts who would see the first "earth-rise".
  5. 6. The name of the first object to orbit the moon.
  6. 9. The last digit of the year mankind landed on the moon.