The shuttle Atlantis STS-122 crew poses for a group portrait in front of the astronaut van as they leave.

Dressed in their launch and entry suits, the space shuttle Atlantis STS-122 crew poses for a group portrait in front of the astronaut van as they leave the Operations and Checkout Building for Launch Pad 39A. From left are Mission Specialists Leopold Eyharts, Stanley Love, Hans Schlegel, Rex Walheim, and Leland Melvin; Pilot Alan Poindexter; and Commander Steve Frick. Eyharts and Schlegel are with the European Space Agency. Eyharts will remain on the International Space Station as a flight engineer for Expedition 16 following the STS-122 mission. The STS-122 crew is preparing for a simulated launch countdown aboard Atlantis, part of terminal countdown demonstration test, or TCDT, activities at NASA's Kennedy Space Center. The TCDT is a dress rehearsal for launch and also provides astronauts and ground crews with equipment familiarization and emergency egress training. On mission STS-122, Atlantis will deliver the Columbus module to the International Space Station. The European Space Agency's largest single contribution to the station, Columbus is a multifunctional, pressurized laboratory that will be permanently attached to U.S. Node 2, called Harmony. The laboratory will expand the research facilities aboard the station, providing crew members and scientists from around the world the ability to conduct a variety of experiments in the physical, materials and life sciences. Launch is targeted for Dec. 6. Photo credit: NASA/Kim Shiflett