European Space Agency (ESA) astronaut Thomas Reiter (bottom center), Expedition 13 flight engineer, and the STS-121 crewmembers pose in "star-burst" formation for an in-flight portrait in the Destiny laboratory of the International Space Station while Space Shuttle Discovery was docked with the station. Clockwise, around the circle from Reiter, are astronauts Michael E. Fossum, Lisa M. Nowak, both mission specialists; Steven W. Lindsey and Mark E. Kelly, commander and pilot, respectively; Stephanie D. Wilson and Piers J. Sellers, mission specialists. Reiter launched on the Space Shuttle Discovery with the STS-121 crew and officially became an Expedition 13 crewmember after the shuttle docked with the station.