50 yrs of Apollo 11: How geological maps made the moon landings worthwhile

I still remember a cartoon in a newspaper in July 1969, just before the first Apollo moon landing. It showed the ground crew reminding the astronauts as they boarded their rocket, “Don’t forget to bring back some rock!” This was a nod to an old holiday cliché – people who went to the seaside were often asked to bring back some “rock”, referring to rock candy. It wasn’t very funny, but it does demonstrate that, once the race against the Soviets was won, the point of it all was to find out about the moon’s geology.