INTERNATIONAL SPACE STATION - A video posted to YouTube provides an in-depth tour of the International Space Station hosted by astronaut Sunita Williams.
Williams, the former commander of the space station, recorded the 25-minute video, which shows her floating around the ISS the day before she left the orbiting outpost.
The video tour explains the function of each room, including a peek into where astronauts sleep and keep their personal belongings.
Watch the tour below.Tour of International Space Station
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