ESA astronauts Frank De Winne (r) and Andre Kuipers (l) visit the European Astronaut Centre (EAC), in Cologne, Germany, in preparation for next year's long-duration mission to the International Space Station (ISS). Frank De Winne is assigned as a member of the primary crew who will stay on the Station between May and November 2009, Andre Kuipers is assigned as his back-up.