Soyuz 4 was launched on January 14, 1969. On board the Soyuz 7K-OK spacecraft was cosmonaut Vladimir Shatalov on his first flight. The aim of the mission was to dock with Soyuz 5, transfer two crew members from that spacecraft, and return to Earth. The previous three Soyuz flights were also dock attempts but all had failed for various reasons. Read more
Forty years ago, on January 16, 1969, two Russian spacecraft (Soyuz 4 and Soyuz 5) carried out the first docking between two manned spacecraft and transfer of crew between the craft. The Soyuz 4/5 mission was a critical milestone for the future of manned space missions, the rendezvous and docking of manned spacecraft being essential for the development of space stations.