The United States’ space program went full throttle in 1961 when President John F. Kennedy challenged the nation to claim a leadership role in space and land a man on the Moon before the end of the decade. The Soviet Union, America’s rival in the Cold War, had surged ahead of the United States with spectacular achievements in space that struck fear into the hearts of many American citizens. Soviet leaders hailed these feats as a triumph of Communism. When a leading American physicist was asked what would be found on the Moon, he replied, “Russians.”