Alright, couple follow up questions. Would I be able to store tritium and deuterium in an asteroid? Would it require power like the cryostat tanks? I am thinking 4 million tritium might provide enough helium-3 to power a good number of power stations. I am also thinking of using an asteroid as a depleted fuel dump. Basically have 10 or 20 mining/power stations on the Mun beaming power around until I get something more advanced. I am starting over for 0.90, and it's a TAC LS, RT, Interstellar, every USI mod, and a dozen other mods type thing. I like to have a general plan on how I want to structure my entire logistics system. As it stands, every planet and moon has a role, even if its just supplying food to LKO power stations. I am currently developing the Kerbin system and don't intend on leaving there until unlocking fusion power. By that time all the fission plants should be running, so I can't really wait until I am hollowing out the asteroid see if it holds nuclear waste, because if it doesn't, I need to drastically change the plan.