Cosmonauts Alexander Viktorenko (left), Yuri Malenchenko (centre) and Valery Poliakov (partially obscured by Malenchenkov) aboar Mir's core module during EuroMir-94. ESA astronaut Ulf Merbold spent 29 days aboard Russia's Mir space station in October-November 1994 as part of the EuroMir-94/Soyuz-TM 20 mission. [Image Date: 1994/10] [94.11.04-03/25]