LAMOST is a 4.9-meter innovative reflecting Schmidt telescope featuring 37+24 segmented mirrors and 4000 optical fibers. With 5-degree wide field and 16 spectrographs, it conducts massive spectroscopic surveys of the Milky Way and galaxies since 2009.

China's Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) on Tuesday issued its latest dataset, including more than 30 million spectra, to domestic astronomers and international collaborators, cementing its position as the survey project with the highest number of released spectra worldwide.

China's Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST), a major piece of national scientific infrastructure which is operated by the National Astronomical Observatories of the Chinese Academy of Sciences (NAOC), has announced a series of technological breakthroughs and a new data-release milestone. According to the NAOC, as of October 2025, LAMOST has released a total of 28.07 million spectra and 11.59 million sets of stellar parameters, retaining its status as the world's leading producer of astronomical data.

A research team from the Yunnan Observatories of the Chinese Academy of Sciences has conducted a study on the binary fraction of Blue Horizontal-branch stars. Their findings provide the intrinsic binary fraction and reveal its relationship with metallicity, kinematics, and effective temperature.