Looking ahead to the next 25 years of private space stations

Humans have occupied low Earth orbit (LEO) over the past half century thanks to the Salyut, Skylab, Mir and Tiangong programs and, of course, the International Space Station (ISS). Aside from providing incredible views of Earth, these space stations have proved that humans can live and work in space while bringing unique lessons about microgravity and the cosmos. They have taught us about the challenges of living in microgravity and the fragility of life beyond our planetary cradle. 

Commercial space stations go international

One of the most enduring achievements of spaceflight has been the partnership for the International Space Station. For more than three decades, the United States has worked with Canada, Europe, Japan and Russia to build and operate the station, overcoming technical and policy challenges to create a space station that has been permanently occupied for over 20 years.