I have thaught a lot about this lately. we could build an awsome space station for very cheap with this thing. If you build a space station on the ground, it becomes significantly cheaper, and this HLV will allow us to do this. I do have an adition to this idea though. from every video i've seen, the EDS does not fire to attain orbit, this indicates that the fuel tanks would also be ataining orbit. now I have always figured that building stations out of shuttle fuel tanks was bogus, but if:<br /><br />A. the tanks are already ataining orbit<br />B. the tanks are already attached to habitable modules<br /><br />with this info, what if we simply left this "Astrolab" attached to its tanks below, with the materials needed to convert the tanks loaded inside. whether this makes it wet or dry is irrelevant. station crews could convert the tank into an enourmus amount of habitable space without needing to do a single space walk. NASA could decide whether to bother converting the tank once its up there, plus, the conversion could be done in a very short amount of time. if everything were designed to be asembled easily, you could have a station far larger than the ISS within a year of launch. it's the ISS but better, cheaper, and faster. what's not to love?