During the twelve-day mission the Unity module was mated with Zarya module.

During the 12-day mission the U.S.-built Unity module was mated with the Russian Zarya module.

The Russians had already placed the Zarya module in orbit so this mission was to connect Zarya to the American Unity module.

Z1 truss (above) and Unity Module (below) from STS-92 in October 2000

Z1 truss (above) and Unity Module (below) from STS-92 in October 2000