Bigelow is best-known for its inflatable mini space stations, which are being monitored to see how space materials behave after many years in orbit. It has had two modules in orbit for about a decade: Genesis I launched in July 2006 and Genesis II in June 2007. Just recently, a Bigelow module was added to the International Space Station.
Naturally, Bigelow's vision for deep space includes inflatables as well. Its prototype is called the XBASE (Expandable Bigelow Advanced Station Enhancement), which would be about 330 cubic meters in size. It's not only big enough to house people, but also hardware that could be used one day in deep space.
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Credit: Bigelow Aerospace