This Day in History — The First Drive on the Moon
On this day in 1971
On July 31, 1971, Scott and Irwin became the first humans to drive on the Moon — despite the front steering system failing on their very first EVA.
The Off-Key Bard watches tire tracks carve across gray lunar dust that had lain undisturbed for four billion years…
"Landing on another world was a triumph of engineering. Learning how to drive across its mountains transformed spaceflight into true exploration."
On this day in 1971, Apollo 15 astronauts David Scott and James Irwin became the first humans to drive a motor vehicle on the surface of the Moon. The Lunar Roving Vehicle — designed, tested, and delivered to NASA in just 17 months — had been folded into a compact package and stowed in a wedge-shaped bay on the side of the Lunar Module Falcon. When Scott pulled the deployment cord on the surface of Hadley Rille, the chassis and wheels unfolded automatically through a system of pulleys, cables, and spring-loaded hinges.
Then the front steering system failed.
The front wheel steering motors didn't respond. Scott and Irwin were on the Moon with the world's first lunar car, and it would only steer from the rear. They reported the malfunction to Mission Control, took a moment to assess, and drove anyway — the rear steering proved sufficient for safe navigation across the terrain. Three days later they had covered approximately 17.5 miles of lunar surface. It was that kind of mission.
The Machine: The LRV was powered by two 36-volt silver-zinc batteries and four quarter-horsepower electric motors, one in each wheel hub. It weighed about 460 pounds on Earth — roughly 76 pounds in lunar gravity — and was designed to travel at up to 8 miles per hour, though the terrain rarely permitted that. The wheels were woven mesh of zinc-coated steel piano wire fitted with titanium chevron treads, because inflatable rubber tires would have burst in the vacuum and shattered in the temperature swings between lunar day and night.
The Safety Rule: Scott and Irwin were under strict instructions never to drive farther from the Lunar Module than they could walk back in their suits if the rover broke down. Every traverse was a calculated balance between scientific ambition and the distance a human being in a pressurized spacesuit could cover on foot across volcanic rock and ancient dust.
What They Found: Over three EVAs, they climbed the foothills of the Apennine Mountains, explored the edge of Hadley Rille — a sinuous canyon 1,300 meters wide and 300 meters deep — and collected approximately 170 pounds of lunar samples. Among them was the Genesis Rock: a piece of anorthosite from the original lunar crust, dating to roughly 4.5 billion years old, nearly as old as the solar system itself. Without the rover, neither the Rille nor the mountains would have been reachable.
Scott later described the experience of driving on the Moon as "just like driving on Earth" — with one difference. In the low lunar gravity, the rover tended to bounce, and on rough terrain the rear wheels would leave the surface entirely on the downward side of rises, the whole machine briefly airborne over a world that had never known tires.
"Across gray plains where none had trod,
They drove where only silence plodded…
Each track they left in ancient dust
Was built on science, skill, and trust."
History reminds us: the greatest breakthroughs in exploration don't just put humans on a new shore — they build the tools that let us push past the horizon and truly understand what we find. And sometimes, they require driving several miles across the Moon on rear-wheel steering alone, because there was never any going back to the garage.