China is expected to launch two more space labs called Tiangong 2 and Tiangong 3 before 2016. It will then launch a three module 60-ton space station
A number of additional Salyuts were produced, as backups or as flight articles that were later canceled. The U.S. Space Station Freedom program, which, despite being under development for ten years, was never launched, instead evolving into the International Space Station The Soviet/Russian Mir-2 station, which was never constructed, had some of its elements incorporated into the International Space Station. The Industrial Space Facility was a station proposed in the 1980s that was to be privately funded. The project was canceled when the company created to build it,Space Industries Incorporated, was unable to secure funding from the United States government. The European Columbus project planned to create a small space station serviced by the Hermes shuttle. It evolved into the ISS Columbus module.