Tags: Artificialsatellite, Satellite.
Soyuz 27 (Russian: Союз 27 Union 27) was a 1978 Soviet manned spacecraft which flew to the orbiting Salyut 6 space station during the mission EP-1. It was the third manned flight to the station and the second successful docking. Once docked it marked the first time that three spacecraft were docked together.The main function of the EP-1 mission was to swap Soyuz craft with the orbiting crew in so doing freeing a docking port for a forthcoming supply tanker.