SPACE · 24 Oct 2026
NASA Sends Harmony Module to ISS in 2007
On October 23, 2007, the space shuttle Discovery launched the Harmony module to the International Space Station on the STS-120 mission. Harmony expanded the station, and missions like this show how large orbital infrastructure is assembled step by step, with careful coordination between launch, crew and ground teams. For anyone working in aerospace, engineering or mission operations, this is a useful reminder that complex systems grow through many coordinated flights rather than a single leap. Looking back at milestones like this also helps teams learn from proven approaches as they plan the next generation of space hardware.
Key points
- What happened On October 23, 2007, the space shuttle Discovery launched the Harmony module to the International Space Station.
- The key detail The launch was part of the STS-120 space shuttle mission, which carried Harmony to the station.
- Why it matters Harmony was a significant addition to the ISS, and this launch is a notable moment in shuttle-era space history.