During the summer of 1971, 50 years ago, three astronauts made the most of three days on the Moon’s surface and in lunar orbit. With the opportunity for more detailed exploration and the addition of “dune buggy”-like transportation, Apollo 15 was the most complex flight to date.
In early 1966, Gemini VIII chalked up another crucial spaceflight technology milestone for the United States. But the triumph quickly became an in-flight emergency, testing NASA’s quick-thinking skills to bring the astronauts safely home — 55 years ago this month.
After the Apollo command/service module was tested successfully in Earth orbit and on a trip to the Moon, NASA prepared for the next step, the first piloted flight test of the spacecraft designed to land on the lunar surface.