Crew members take a ride inside Atlantis' payload bay to examine components installed there.

STS-122 crew members take a ride inside space shuttle Atlantis' payload bay to examine components installed there. Seen here are Mission Specialists Leland Melvin (center) and Rex Walheim (right). The crew is at Kennedy Space Center to take part in a crew equipment interface test, which includes equipment familiarization. The mission will carry and install the Columbus Lab, a multifunctional, pressurized laboratory that will be permanently attached to Node 2 of the space station to carry out experiments in materials science, fluid physics and biosciences, as well as to perform a number of technological applications. It is Europe’s largest contribution to the construction of the International Space Station and will support scientific and technological research in a microgravity environment. STS-122 is targeted for launch in December. Photo credit: NASA/Kim Shiflett