Today's space walk - the 45th in space shuttle history and the fourth of the International Space Station era - began at 9:56 p.m. Central time Saturday night, and concluded at 5:51 a.m. Sunday, lasting 7 hours, 55 minutes. The longest spacewalk was conducted by STS-49 Astronauts Rick Heib, Pierre Thuot and Tom Akers, which lasted 8 hours, 29 minutes on May 13 and 14, 1992.
During today's spacewalk, Jernigan and Barry transferred and installed two cranes from the shuttle's payload bay to locations on the outside of the station. They also installed two new portable foot restraints that will fit both American and Russian space boots, and attached three bags filled with tools and handrails that will be used during future assembly operations. Once those primary tasks were accomplished, Jernigan and Barry installed an insulating cover on a trunnion pin on the Unity module, documented painted surfaces on both the Unity and Zarya modules, and inspected one of two early communications system antennas on the Unity.
Throughout the space walk, Jernigan and Barry were assisted by their crew mates as Mission Specialist Ellen Ochoa operated the Shuttle's robot arm to maneuver Jernigan around Discovery's cargo bay, and Canadian Space Agency astronaut Julie Payette acted as "choreographer" of the spacewalk from Discovery's flight deck.
The excursion raised the total number of International Space Station era space walks to four, with the total time spent on construction activities now standing at 29 hours, 17 minutes. STS-88 Astronauts Jerry Ross and Jim Newman spent 21 hours, 22 minutes outside Endeavour during their three space walks.
The crew is scheduled to begin its sleep shift at 8:50 a.m. today and will receive a wake-up call from Mission Control at 4:50 p.m. The crew is scheduled to open a series of hatches connecting Discovery with the International Space Station and enter the new facility about 7:35 p.m. Central time to begin the transfer of equipment and logistical supplies from the Shuttle to the station. They'll also conduct repairs on battery charging systems in Zarya and a balky communications system in Unity.