For example, a prior U.S. space station, Skylab, crashed to Earth following a largely uncontrolled deorbit in July 1979. An uncontrolled deorbit is cheaper (essentially free) but runs the risks of ...
TRS would have then been docked with Skylab via remote control from the Shuttle. Once docked, its thrusters would have been used to raise the space station into a higher orbit — or to deorbit it ...