Between the mid-1950s to 1975, the United States and the Soviet Union strived to outdo each other in rocket technology and space exploration. This ongoing rivalry became known as the 'Space Race'. By early-1961, the 'Space Race' between the United States and the Soviet Union was in full swing. Both nations had developed spacecraft to send humans into space and selected a group of pilots to fly those spacecraft. This is the story about Space Flight written especially for kids.