"Ask some robotic engineer if they would care to build a robot that operates in liquid nitrogen and the robot must breakup and grind rock while there."
It's extremely unlikely that there is significant quantity of liquid nitrogen anywhere on the Moon.
If the Earth was as cold as Mars, then those Mars rovers would probably need some modifications to operate on Earth. With this same level of modification, a mars rover [not requiring solar energy for power needs] could function in the coldest lunar crater. Nuclear, chemical power, and/or beamed power could be options.
And a spacesuit could be designed to allow a human to walk in the coldest crater for hours- getting rid of excess heat in a spacesuit is the problem, rather than keeping warm in a constantly cold vacuum environment.
Space/Science » in reply to re: distances
re: distances