Cooling is the process of offloading heat from one atom to another. In space and the moon, there’s very little…anything. You can’t transfer heat onto nothing - so an “air cooled” heat vent doesn’t work. Another user suggested they use the moon itself or moon dust as a heat sink, and you could do that in theory.
“There’s no longevity in one character.”
Deadpools “'TILL YOURE NINETY!” line gets me here. You absolutely could have a character go a long time, but as she (and Jackman) said, it becomes how long you’re willing to play them.