ARISS is an international educational program in which amateur radio organizations in the USA, Canada, Europe, Russia and Japan participate.
ARISS offers students the opportunity to spark their interest in radio amateurs by allowing them to speak directly with crew members on the International Space Station. This initiative already has several connections with different schools in the USA, but also in Europe. You can find more information about the project at http://www.ariss-eu.org/.
On the mentioned page, you can also sign up to receive regular information about ARISS activities.
Astronaut Mike Fincke's contact with the European Space Operations Center (ESOC) in Darmstadt as part of the event "The long night of the stars" is planned for Saturday, September 18. This evening Mike will be on the hook with DL0ESA, which is ESOC's club station.
QSO is scheduled for 18:54 UTC. Stations in Europe are invited to listen on the downlink frequency of 145.800 MHz FM.