Spaceflight to work on American missiles at what became the Army Ballistic Missile Agency. This work on missiles such as Juno I and Atlas enabled launch of the first US satellite Explorer 1 on February 1, 1958, and the first American in orbit, John Glenn in "Friendship 7" on February 20, 1962. As director of the Marshall Space Flight Center, Von Braun oversaw development of a larger class of rocket called Saturn, which allowed the US to send the first two humans, Neil Armstrong and Buzz Aldrin, to the Moon and back on Apollo 11 in July 1969. Over the same
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