Astronaut Henry Hartsfield, STS-61A Commander, shakes hands with NASA's George Abbey, Director of Flight Crew Operations, and lead off the other members of Challenger’s crew as they descend the steps for their first contact with Earth in over a week. From left, Guy Bluford, Jim Buchli, Steve Nagel, Bonnie Dunbar, Wubbo Ockels, Ernst Messerschmid and Reinhard Furrer. The Challenger’s wheels stopped at 9:45 a.m. (PST) on the Mojave Desert dry lake bed at Edwards Air Force Base, California.