on september 1 , 1990 , during a spacewalks , nicholas serebrov dons an experimental flying armchair that had been transmitted to mir with kvant 2 . unlike u . s . sailors , having experienced untethered flights with a separate attachment , the soviet cosmonaut remains attached to the building with a safety fastened , since there is no space shuttle to pull him up in suit of an emergency .
US shuttle Atlantis docks with the Mir space station.