Apollo program an address to Congress on May 25, 1961. It was the third US human spaceflight program to fly, preceded by the two-man Project Gemini conceived in 1961 to extend spaceflight capability in support of Apollo. Kennedy's goal was accomplished on the Apollo 11 mission when astronauts Neil Armstrong and Buzz Aldrin landed their lunar module (LM) on July 20, 1969, and walked on the lunar surface, while Michael Collins remained in lunar orbit in the command and service module (CSM), and all three landed safely on Earth on July 24. Five subsequent Apollo missions also landed astronauts on the Moon,
Yuri Gagarin during the period of the Soviet Union. The Air Force Academy was renamed Gagarin Air Force Academy in 1968. There is street in Warsaw called Yuri Gagarin Street. Gagarin has been honored on the Moon by both astronauts and astronomers. He was honored by the American space program during Apollo 11 in 1969 when astronauts Neil Armstrong and Buzz Aldrin left a memorial satchel containing medals commemorating Gagarin and fellow cosmonaut Vladimir Komarov on the surface. In 1971, Apollo 15 astronauts David Scott and James Irwin left the "Fallen Astronaut" at their landing site as a memorial to all the