Well here you are. Stuck in a backwater port, looking for a way off before your funds run dry. You left your last job a few standard weeks ago, bummed around the frontier a bit, looking for some of that “see the universe” kind of excitement your last job promised, and you wound up on this inhospitable rockball. The most interesting thing on the planet is the Science Commission Base, and that is off-limits to outsiders – such as yourself.
Marcos’ only saving grace is that it is on the way to somewhere else. It lies on the main coreward – trailing trade route across known space. That is the reason you are here. You were “just passing through”, trusting that you would find work enough to pay your passage to some place either more comfortable, or more exciting.