A group of researchers have found super-Earths (SEs) and mini-Neptunes (MNs) planets followed distinct evolutionary paths, after conducting an in-depth study based on large-sample observational data, according to the National Astronomical Observatories of the Chinese Academy of Sciences.

Chinese astronomers have conducted observations and analyses of star clusters in the outer halo of the Andromeda Galaxy -- the Milky Way's cosmic neighbor -- hoping to uncover the growth story of this galaxy from these celestial "time capsules."

A study published in Science and conducted by Ke-Ting Shin, Dong-sheng An, Ji-Wei Xie, Ji-Lin Zhou and Fei Dai first revealed that super-earths and mini-neptunes follow different orbital period—eccentricity relations, indicating that despite with similar sizes, super-earths and mini-neptunes underwent distinct dynamical evolutionary histories.

A team of Chinese astronomers has discovered that the Milky Way’s dark matter halo stands upright, suggesting that our galaxy’s disk may have flipped in the past few billion years due to cosmic interactions.

A new study published in the prestigious journal Nature Astronomy on October 31, 2025, has uncovered a segmented decline in the occurrence rate of hot Jupiters with stellar age, providing the first clear evidence that these giant exoplanets form through multiple distinct mechanisms operating over vastly different timescales. The research, led by an international team using data from China's LAMOST and Europe's Gaia telescopes, also delivers precise constraints on stellar tidal dissipation, resolving long-standing questions about the orbital evolution of close-in planets.

A new study published by The Australian National University experts in Nature Astronomy reveals that stars in close binary systems – pairs of stars orbiting each other at close range – can exhibit unexpectedly high levels of magnetic activity. In this study, LAMOST has played a significant role.

BEIJING, March 14 (Xinhua) -- Chinese and foreign astronomers have unveiled the first three-dimensional (3D) map of the properties of interstellar dust in the Milky Way. This breakthrough will provide critical support for precise astronomical observation, and for studies in the areas of astrochemistry and galactic evolution.

Recently, an international research team discovered a rare super-Chandrasekhar binary system composed of a massive white dwarf and a hot subdwarf star. This discovery was made using data from the LAMOST spectroscopic survey. This study supports the possibility of new evolutionary paths for binary systems involving white dwarfs and provides a new potential formation channel for neutron stars.

Based on observational data from the Gaia satellite and the Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST), Chinese astronomers have discovered a star ejected from a globular cluster in the Milky Way, with a velocity as high as 550 kilometers per second. Their analysis suggests that such a high escape velocity is likely due to the presence of an intermediate-mass black hole at the center of the cluster.

Notably, among the young USP planet sample, the proportion of multi-transiting systems is lower, suggesting that young USP planet systems may have higher mutual inclinations and/or fewer neighboring companion planets.