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When did the first Biosphere 2 crew emerge from the enclosure?
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Biosphere 2
Biosphere 2, located in Oracle, Arizona, U.S., shown in 2008. The facility was originally developed to study survivability and assess whether humans were capable of building and living in self-sustaining colonies in outer space. It was later used as a scientific research facility.
The first crew of "Biospherians" emerged from the Biosphere 2 enclosure on September 26, 1993, after completing a two-year mission that began on September 26, 1991.1