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In the NASA report "Scientific Rationale Summaries for Apollo Candidate Lunar Exploration Landing Sites" from March 11, 1970, Apollo 18 is targeted for Copernicus, and Apollo 19 is assigned Hadley rille (the eventual landing site of Apollo 15). The Apollo 20 mission had been canceled two months before, but the report still suggested its target ...
First, Apollo 20 was cut to make a Saturn V available to launch the Skylab space station whole instead of building it on-orbit using multiple Saturn IB launches. [45] Eight months later, Apollo 18 and 19 were also cut to further economize, and because of fears of increased chance of failure with a large number of lunar flights. [46] [47]
The Apollo program included three other crewed missions: Apollo 1 (AS-204) did not launch and its crew died in a ground-based capsule fire, while Apollo 7 and Apollo 9 were low Earth orbit missions that only tested spacecraft components and docking maneuvers. Apollo missions 18, 19, and 20 were canceled.
Apollo 16 landed in the Descartes Highlands on April 20, 1972. The crew was commanded by John Young, with Ken Mattingly and Charles Duke. Young and Duke spent just under three days on the surface, with a total of over 20 hours EVA. [121] Apollo 17 was the last of the Apollo program, landing in the Taurus–Littrow region in
Apollo 19 astronauts on a mission to the Aitken Basin; Apollo 20 recovery mission. Apollo 18 mission to Schröter's Valley in the Ocean of Storms is part of back-story. [ 130 ]
Amid the gradual cancellation of the later Apollo missions and the devolution of the AAP into the Skylab program, Lind was formally reassigned to the latter effort in August 1969; according to Slayton, who noted Lind's disappointment, "with the cancellation of [Apollo] 20, I could see I just wasn't going to have a flight for him". [14]
On 20 July 1969 Apollo 11 landed on the Moon, and Neil Armstrong became the first person to walk on the Moon. At the same time another mission, the robotic sample return mission Luna 15 by the Soviet Union, was in orbit around the Moon, becoming together with Apollo 11 the first ever case of two extraterrestrial missions being conducted at the ...
NASA and Bellcom mission planners considered the Surveyor 7 site as a potential target for a crewed late Apollo mission, perhaps Apollo 20, though a combination of operational constraints, including the high latitude of the site and its rough terrain, and the early cancellation of post-Apollo 17 lunar missions, contributed to the site's ...