English: This Boeing photograph shows the Node 1, Unity module, Flight Article (at right) and the U.S. Laboratory module, Destiny, Flight Article for the International Space Station (ISS) being manufactured in the High Bay Clean Room of the Space Station Manufacturing Facility at the Marshall Space Flight Center. The Node 1, or Unity, serves as a connecting passageway to Space Station modules. The U.S. built Unity module was launched aboard the orbiter Endeavour (STS-88 mission) on December 4, 1998 and connected to the Zarya, the Russian-built Functional Energy Block (FGB). The U.S. Laboratory (Destiny) module is the centerpiece of the ISS, where science experiments will be performed in the near-zero gravity of space. The U.S. Laboratory/Destiny was launched aboard the orbiter Atlantis (STS-98 mission) on February 7, 2001. The ISS is a multidisciplinary laboratory, technology test bed, and observatory that will provide unprecedented undertakings in scientific, technological, and international experimentation.