Tiangong-3 (Chinese: 天宫三号; pinyin: Tiāngōng sānhào; literally: "Heavenly Palace 3") will be a Chinese space station module, part of the Tiangong space station program. The China National Space Agency was originally expected to launch Tiangong-3 around 2015, following the launch of the Tiangong-2 laboratory module originally planned for 2013. As of September 2014, it is expected to launch in 2022. Tiangong-3's design will form the basis of Chinese large modular space station, which is expected to launch in the 2020s.