Mir EO-20 was a long-duration Mir expedition and ESA's EuroMir 95 mission. Yuri Gidzenko, Sergei Avdeyev, and Thomas Reiter launched from Baikonur on Soyuz TM-22 on September 3, 1995, docked with Mir on September 5, and returned aboard the same spacecraft on February 29, 1996. The mission combined Russian resident station operations with an extended ESA research program for Reiter, who became the first German to perform a spacewalk. The crew supported station research, Shuttle-Mir traffic including STS-74's docking-module delivery, Progress operations, and a set of EVAs and internal transfer-compartment work around Mir external and docking systems.