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This artist's rendering provided by Bigelow Aerospace shows a Bigelow inflatable space station. NASA is partnering with this commercial space company to test an inflatable room that can be compressed into a 7-foot tube for delivery to the International Space Station. NASA is expected to install the module by 2015. (AP Photo/Bigelow Aerospace)

Associated Press
This artist's rendering provided by Bigelow Aerospace shows a Bigelow inflatable space station. NASA is partnering with this commercial space company to test an inflatable room that can be compressed into a 7-foot tube for delivery to the International Space Station. NASA is expected to install the module by 2015. (AP Photo/Bigelow Aerospace)
This artist's rendering provided by Bigelow Aerospace shows a Bigelow inflatable space station. NASA is partnering with this commercial space company to test an inflatable room that can be compressed into a 7-foot tube for delivery to the International Space Station. NASA is expected to install the module by 2015. (AP Photo/Bigelow Aerospace)
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