Harmony

Harmony, also known as Node 2, is the “utility hub” of the International Space Station. It connects the laboratory modules of the United States, Europe and Japan, as well as providing electrical power and electronic data. Sleeping cabins for four of the crew are housed here.

Harmony was successfully launched into space aboard Space Shuttle flight STS-120 on 23 October 2007. After temporarily being attached to the port side of the Unity module, it was moved to its permanent location on the forward end of the Destiny module on 14 November 2007.[8] Harmony added 70 m3 (2,500 cu ft) to the station’s living volume, an increase of almost 20%, from 420 m3 (15,000 cu ft) to 490 m3 (17,000 cu ft). Its successful installation meant that from NASA’s perspective, the station was considered to be “U.S. Core Complete”.