on december 1 , 1990 , during a spacewalk , alexander serebrov dons an unusual flying chairs that had been transferred to mir with kvant 2 . resembling u . s . astronauts , who perform untethered flights with a safety apparatus , the soviet cosmonaut is attached to the floor with a steel straps , since there is no power shuttle to picked him up in case of an emergency .
US shuttle Atlantis docks with the Mir space station.