Ask anyone to name a person who walked on the Moon. You will hear Neil Armstrong. You might hear Buzz Aldrin. But ask them who closed the door on lunar exploration, and you will likely get a blank stare.
That is a shame. The final mission, Apollo 17 in December 1972, was not some boring victory lap. It was the most scientifically productive, daring, and record-breaking mission of the entire program. While Apollo 11 was about proving we could get there without dying, Apollo 17 was about actually doing science on another world.
Twelve humans have walked on the lunar surface. We are losing the people who lived this history. With the recent passing of legends like Ken Mattingly and Frank Borman, only a handful of Apollo veterans are still with us. Understanding what the final crew accomplished is not just about nostalgia. It directly shapes how we are trying to go back right now.
The Geologist Who Almost Didn't Fly
Most Apollo astronauts were military test pilots. They were chosen because they knew how to handle experimental aircraft that wanted to explode. They were "stick and rudder" guys.
Harrison "Jack" Schmitt was different. He was a civilian geologist with a Harvard PhD. He did not spend his pre-NASA career dogfighting in jets; he spent it looking at rocks and field mapping.
NASA always intended to send a scientist to the Moon, but Schmitt was originally slated for Apollo 18. When budget cuts killed that mission, the scientific community went ballistic. They pressured NASA hard. They argued that sending only test pilots to the Moon was like sending a plumber to perform brain surgery. You would get the job done, but you would miss the nuance.
NASA caved. They bumped pilot Joe Engle from the Apollo 17 roster and put Schmitt in his place. It caused huge friction at the time, but it paid off massively.
Finding Orange Dirt on a Gray World
Schmitt and mission commander Gene Cernan landed their lunar module, Challenger, in the Taurus-Littrow valley on December 11, 1972. This site was picked specifically because it looked like it had both very old and relatively young volcanic material.
During their second moonwalk, near a place called Shorty Crater, Schmitt looked down and saw something impossible. In a world defined by stark grays and blacks, the soil was bright orange.
"There is orange soil!" Schmitt famously called out. Cernan originally thought his partner was seeing things through his gold-tinted visor. But it was real.
That dirt was not rust or some camera trick. It was tiny beads of volcanic glass formed from a fire fountain eruption over 3 billion years ago. It proved that the Moon was not always a dead, cold rock. It had a violent, active past. A test pilot might have missed it or lacked the vocabulary to describe it on the fly. Schmitt knew exactly what he was looking at.
Breaking Records and Breaking Fenders
People forget how much ground these guys covered. Thanks to the Lunar Roving Vehicle, basically a stripped-down electric dune buggy, Cernan and Schmitt traveled over 22 miles across the lunar surface. They stayed on the Moon for 75 hours.
They also showed some classic human ingenuity. At one point, Cernan accidentally caught his hammer on the rover's rear fender and ripped it off. This was a massive problem. Without the fender, the rover's wheels would kick up a continuous rooster tail of abrasive lunar dust. That dust would coat their spacesuits, clog seals, and cause everything to overheat.
Did they call off the drive? No. They taped four plastic-coated mapping charts together and clamped them to the rover using light fixtures from the lunar module. It worked perfectly. It is the kind of field fix you can only get when you put humans on the ground instead of robots.
While they were kicking up dust, Ronald Evans was orbiting above in the command module, America. He did not get to walk, but he operated complex cameras and sensors that mapped the surface in unprecedented detail. On the way back to Earth, Evans even performed a spacewalk in deep space to retrieve film cassettes from the outside of the spacecraft.
The Real Reason We Stopped Going
The biggest misconception about the end of the Apollo program is that we stopped going because we lost interest or because of some conspiracy. The reality is much more boring and depressing: money and politics.
President John F. Kennedy's 1961 challenge to land a man on the Moon was a Cold War project. We did not go to the Moon primarily to advance geology. We went to prove to the Soviet Union that our tech and our economic system were superior. Once Armstrong stepped off the ladder in 1969, the political box was checked.
By 1972, the public was checked out. The Vietnam War was draining the national budget. Urban crises and inflation were dominating the news. Apollo was costing a massive chunk of the federal budget at its peak. Congress and the Nixon administration saw no reason to keep funding multi-billion dollar camping trips to a place we had already been.
What Apollo 17 Teaches Us About the Present
We are currently trying to get back to the Moon with the Artemis program. But this time, the strategy is completely different because of what we learned from Apollo 17.
- Sustainability over speed: Apollo was a sprint. We threw everything we had at getting there first, and then we abandoned the hardware. Artemis is trying to build a sustainable presence, including a space station in lunar orbit called Gateway.
- The ice hunt: Apollo 17 showed us the Moon's volcanic history. Now, we are targeting the lunar South Pole because we know there is water ice in permanently shadowed craters. We are going there to harvest resources, not just collect rocks.
- Commercial partnerships: NASA does not build the rockets alone anymore. They are using companies like SpaceX. This is an attempt to avoid the massive cost spikes that killed Apollo.
Cernan was the last human to step off the lunar surface on December 14, 1972. Before he climbed the ladder, he said they were leaving as they came, and God willing, as they would return, with peace and hope for all mankind. He expected we would be back within a couple of decades. He died in 2017 without ever seeing that happen.
If you want to understand the future of human spaceflight, stop looking at the grainy black-and-white footage of 1969. Look at the high-res, orange-tinted pictures from 1972. That is where the real work started, and that is where we need to pick it back up.
To get a true sense of the scale of these missions, look up the transcripts or audio of the Apollo 17 moonwalks. Hearing a professional geologist lose his mind over a patch of colored dirt on another planet is the most human thing you will ever experience. It beats any sci-fi movie hands down.
