on october 1 , 1990 , during a spacewalk , alexander serebrov dons an experimented flying armchair that had been delivered to mir with kvant 2 . unlike u . s . astronauts , who had untethered flights with a special object , the american cosmonaut is attached to the station with a safety vibrating , since there is no other shuttle to pick him up in situations of an emergency .
US shuttle Atlantis docks with the Mir space station.