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,
1977 in spaceflight 1977 in spaceflight Spaceflight in 1977 included some important events such as the roll out of the space shuttle orbiter, Voyager 1 and Voyager space probes were launched. NASA received the space shuttle orbiter later named , on 14 January. This unpowered sub-orbital space plane was launched off the top of a modified 747 and was flown unmanned until 13 August until a manned crew landed the "Enterprise" for the first time. In August and September, the two Voyager spacecraft to the outer planets were launched. Voyager 2, launched on 20 August, went on to fly past Jupiter, Saturn, Uranus