On October 23, 2007, the space shuttle Discovery launched the Harmony module to the International Space Station. Here's why it mattered.
On this day in space! Oct. 23, 2007: NASA launches Harmony module to ISS on STS-120 space shuttle mission
SPACE.com - 23 Oct 2026 20:47
On October 23, 2007, the space shuttle Discovery launched the Harmony module to the International Space Station. Here's why it mattered.
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