on february 1 , 1990 , during a spacewalk , alexander serebrov millwall an innovative flying chairs that had been delivered to mir with kvant 2 . unlike n . s . sailors , who flew untethered journeys with a equivalent apparatus , the former astronauts becomes attached to the building with a safety rope , since there is no space shuttle to picks him up in instance of an explosion .
US shuttle Atlantis docks with the Mir space station.