This 3 minute video provides an overview of the key events in the history of the United States space program from 1957 to 1972. It discusses the launch of Sputnik 1 by the Soviet Union in 1957 which kicked off the space race. The video then highlights the achievements of Project Mercury and Gemini which involved early American manned spaceflights. It concludes with footage of the historic first manned lunar landing of Apollo 11 in 1969 where American astronauts Neil Armstrong and Buzz Aldrin became the first humans to walk on the moon.