Space Shuttle Endeavour lifts off to begin the construction of the International Space Station. Endeavour conducts a rendezvous with the already-launched Zarya module and attached the Unity station module to it. The two modules’ external connections are completed during a spacewalk, and the station is powered up for the first time on December 7th. Endeavour’s 13th crew is Commander Robert Cabana, Pilot Frederick Sturckow, and mission specialists Nancy Currie, Jerry Ross, James Newman and Sergei Krikalev. Cabana and Krikalev are the first humans to enter the International Space Station, but since the fledgeling facility lacks long-term habitation facilities, it is left unmanned at the end of the 12 day mission.