China Taking Lead on Post ISS Orbital Outposts

More than 70 nations use the International Space Station (ISS) for research today, and a growing realization of its value is driving a sense of urgency to continue the unique facility after the scheduled 2020 shutdown, and replace it once it is gone.

China is leading the way on replacement by default, since U.S. concern about China's military-space program has blocked its full participation in the ISS (although Chinese experiments are beginning to find their way into the station racks).

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