On this day in space! Oct. 23, 2007: NASA launches Harmony module to ISS on STS-120 space shuttle mission
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On October 23, 2007, the space shuttle Discovery launched the Harmony module to the International Space Station. The Harmony module is a utility hub 14 feet wide and 24 feet long, or about the length of a minibus. It joins the European Space Agency's Columbus module and Japan's Kibo laboratory and serves as the crew quarters for the American astronauts. Once it was installed, the space station grew from about the size of a three-bedroom house to something more like a five-bedroom house. When ast
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