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.

Our Milky Way Galaxy is estimated to contain 100 million stellar black holes – cosmic bodies formed by the collapse of massive stars and so dense even light can’t escape. Until now, scientists had estimated the mass of an individual stellar black hole in our Galaxy at no more than 20 times that of the Sun. But the discovery of a huge black hole by a Chinese-led team of international scientists has toppled that assumption.

Based on data from the National Major Scientific Infrastructure LAMOST and the European Space Agency's Gaia satellite, the research team revealed the spatial structural evolution of the ancient Galactic disk, discovering that the oldest surviving structural component of the Galactic disk originated approximately 13.5 billion years ago.

In the vast and diverse Universe, the initial mass distribution at the birth of a new population of stars determines the fate of galaxies. This relationship is described by the Initial Mass Function (IMF). For more than half a century, astronomers have assumed that the IMF is a universal relationship, i.e., it is uniform throughout the Universe.

A new study led by Prof. ZHAO Gang from the NAOC has identified a chemically peculiar star (LAMOST J1010+2358) in the Galactic halo as clear evidence of the existence of PISNe from very massive first stars in the early Universe, based on the LAMOST survey and follow up high resolution spectra observation by Subaru Telescope. It has been confirmed that this star was formed in the gas cloud dominated by the yields of a PISN with 260 solar masses.