Hello everyone, I've been playing KSP for a few days now, just in sandbox mode. After seeing a few videos I became quite intrigued and just HAD to play! I have successfully built a few rockets and some planes. I haven't landed on Mun yet, but I have made successful trips there and back to Kerbal. Reaching orbit, and general orbital maneuvers I have figured out (I am not proficient by any means but I can do it). My super newbish question is this: In all the pictures I see of space-stations, they have (what I assume are) fuel lines running inside the struts (by struts I mean the structural cubic parts that connect different sections of the ship, usually the solar panels are mounted to them.) I cannot find these ANYWHERE in the parts list. Are these part of a mod? I am attempting to build my first space station. Just a small one for refueling on long journies, and just to say that I did it. Another quick question that I may just have to figure out on my own: Are geosynchronous orbits possible? Thank you everyone and glad to be here !!!