The Soviet Union launches the Kristall module, whose pre-programmed systems bring it to the Mir space station for an automated docking. With facilities for material science experiments, additional gyroscopic stabilizers to keep Mir properly oriented, and other equipment, Kristall also features an extended docking port intended to allow the Soviet-made Buran shuttle to dock at Mir. In time, that docking port will allow a space shuttle to berth at Mir… but not the one its designers anticipate.
This is the last expansion made to Mir prior to the collapse of the Soviet Union, and the last new module to arrive for five years.