Shanghai Astronomical Observatory (SHAO), an institute of Chinese Academy of Sciences (CAS), was officially established in 1962 following the amalgamation of the former Xujiahui Observatory and Sheshan Observatory, which were founded by French Jesuits in 1872 and 1900, respectively. The general headquarter is now in Xujiahui of Shanghai and several observational bases are set up in Sheshan, Songjiang District of the city.
Astro-geodynamics, Galaxies & Cosmology and Planetary Science are the major basic research fields in SHAO. Meanwhile, SHAO also develops modern technologies for astronomical observations and time & frequency applications. It has some world-class teams in fundamental researches and plays an important role in national key projects such as navigation & positioning and deep space exploration in the fields of applied research.