they are listed under "buildings" once you finish space flight, yes.
A complete space station has at least -1 life support module -1 habitation module -1 fuel pod -1 propulsion module
That's the bare minimum required to launch it, but it will also take the most turns to travel and thus win.
The fastest you can get a SS to win is in three turns, and it requires 4 propulsion modules instead and 1 of all the others.
You can also build one with 2 of each module and 4 propulsion modules but this doesn't do anything except waste more of your time/gold to make them. Supposedly it affects your score, which you can't even view numerically anyway, only in the form of the vague histograph. --- 10,000 Days in the fire is long enough...you're going home... http://www.petitiononline.com/RRH53888/petition.html stop him!
It doesn't matter which city you build them in; they launch into space upon being finished.
However, you can only finish/rush one part per turn in a city, like with anything else, so you'll need multiple cities building/rushing different parts at the same time to do it in a timely fashion. Hence the need to stockpile some gold; you want to be able to rush parts as soon as Space Flight is done in order to cut down on build times. --- 10,000 Days in the fire is long enough...you're going home... http://www.petitiononline.com/RRH53888/petition.html stop him!