The inflatable habitat prototype SNC built for NASA's NextSTEP program.

Sierra Nevada Corp. is preparing to ship a prototype of an inflatable space habitat designed for lunar orbit and Mars missions to NASA’s Johnson Space Center in Houston.

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Debra Werner is a correspondent for SpaceNews based in San Francisco. Debra earned a bachelor’s degree in communications from the University of California, Berkeley, and a master’s degree in Journalism from Northwestern University. She is a recipient...