if its a craft that has nothing built in to ever even land on a planet, why would they build it there? how will it take off?
i can certainly understand components being manufactured on earth, then ferried to orbit for assembly, but to build the whole thing on ground is only usefull for over-ambitious camera shots...
i can certainly understand components being manufactured on earth, then ferried to orbit for assembly, but to build the whole thing on ground is only usefull for over-ambitious camera shots...