on february 1 , 1990 , during a astronaut , alexander serebrov dons an abandoned flying armchair that had been delivered to mir with kvant 2 . unlike u . s . astronauts , both had untethered flights with a similarly device , the soviet vinogradov remain attached to the station with a safety tether , since there is no space vehicle to pick him up in event of an emergency .
US shuttle Atlantis docks with the Mir space station.