STS121-319-021 (4 - 17 July 2006) --- Astronauts Piers J. Sellers, right, and Thomas Reiter of the European Space Agency, share a meal on the flight deck of the Space Shuttle Discovery during the STS-121 mission. Reiter later joined the Expedition 13 crew aboard the International Space Station, where he'll be performing research and other tasks for the next six months.