And in the 21st century we use robotic drones to survey high radiation hot zones for a reason.
has been behind the curve when it comes to robots, from the very beginning. Even Lost in Space
had a robot!
It's worth pointing out, though, that had there been engineering drones, or even waldos, of some kind, the plot could have ixnayed them, by saying that radiation in the core would fry out their duotronics or whatever. Scotty: "The core is the one place the Rovers can't go."