> Shuttles were almost SSTOs in the sense that the fuel tank could be placed in orbit (and reused as pressurized habitation space, with some extra work). That

> Shuttles were almost SSTOs in the sense that the fuel tank could be placed in orbit (and reused as pressurized habitation space, with some extra work). That is super cool! I gotta dig into that.. pity they never did that. It would be neat to have an ISS module that was a re-purposed shuttle external fuel tank.