Morehead Planetarium and Science Center Armstrong. Armstrong visited again only months before the 1969 launch of Apollo 11, spending a total of 20 days at Morehead over 11 training sessions, more than any other astronaut. Astronauts commented that the "large dome" was "highly realistic", calling the facility "superb". In all, the astronauts who trained at the planetarium were Buzz Aldrin, Joseph P. Allen, William Anders, Neil Armstrong, Charles Bassett, Alan Bean, Frank Borman, Vance D. Brand, John S. Bull, Scott Carpenter, Gerald P. Carr, Eugene Cernan, Roger B. Chaffee, Philip K. Chapman, Michael Collins, Pete Conrad, Gordon Cooper, Walter Cunningham, Charles Duke, Donn F. Eisele,
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