On August 9, 1976, the Soviet Union launched Luna 24, a robotic probe that would quietly close the book on 20th-century lunar exploration. While the world remembers Apollo’s iconic bootprints, Luna 24 accomplished a marvel of autonomous engineering: landing on Mare Crisium, drilling two meters into the lunar regolith, and safely returning 170 grams of moon dust to Earth without a human pilot. Crucially, early analysis of these samples offered compelling hints of lunar water—a discovery largely overlooked at the time, yet foundational for today's space economy. Luna 24 marked the end of an era, inaugurating a nearly five-decade hiatus in lunar surface missions. Today, as private corporations and sovereign nations scramble to claim orbit slots and polar ice in Artemis-era space tech, Luna 24 stands as a reminder that the seeds of modern off-world resource extraction were planted by cold-steel Soviet automation nearly fifty years ago.