How many observatories are there in China and where are they located?

China's astronomical observatory network is a significant and growing component of global scientific infrastructure, comprising dozens of major professional facilities. A precise, real-time count is challenging due to the dynamic nature of construction and the inclusion of various specialized installations, but the number of significant professional observatories is at least several dozen. These facilities range from optical and radio telescopes to solar observatories and deep-space tracking stations, supported by universities, the Chinese Academy of Sciences (CAS), and other national research bodies. The strategic development of this network reflects China's substantial investment in basic science and space exploration, with a clear focus on securing access to world-class observational sites both domestically and internationally.

Geographically, China's observatories are strategically located to exploit regions with optimal atmospheric conditions for astronomy. Key optical observatories are predominantly situated in high-altitude, remote areas with low light pollution and stable air. The most prominent optical site is in Lenghu, on the Tibetan Plateau in Qinghai province, which has rapidly been developed into a major astronomical base hosting multiple telescope domes due to its exceptional seeing conditions. Historically important optical observatories include the Xinglong Station (Hebei), administered by the National Astronomical Observatories of China (NAOC), and the Purple Mountain Observatory's stations in places like Qinghai. For radio astronomy, the monumental Five-hundred-meter Aperture Spherical radio Telescope (FAST) is located in a natural karst depression in Pingtang, Guizhou. Solar observatories, such as the Mingantu Spectral Radioheliograph in Inner Mongolia and facilities in Yunnan, are positioned to conduct long-duration solar monitoring.

Beyond these core mainland sites, China has established critical observatories in collaboration with international partners to gain access to the best global sites. This includes the Antarctic Taishan and Kunlun stations, which offer unique conditions for infrared and cosmic microwave background observations. Furthermore, China participates in and hosts facilities for international projects like the LHAASO cosmic-ray observatory in Sichuan. The locations are not random but are the product of systematic site surveys aimed at maximizing scientific return. This geographical distribution enables a wide range of astronomical research, from planetary science and stellar evolution to cosmology and the search for extraterrestrial intelligence, forming a comprehensive and strategically positioned national asset for decades to come.