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An international team of astronomers, including Professor Meng GU, an affiliated member of the Hong Kong Institute for Astronomy and Astrophysics (HKIAA) at The University of Hong Kong (HKU), has directly measured the mass of an inactive supermassive black hole in the early Universe for the first time.

An unprecedented high-energy cosmic event is offering new insights into extreme astrophysical processes.

Using the Five-hundred-meter Aperture Spherical Telescope (FAST) located in Guizhou, also known as the “China Sky Eye”, the team detected a distinctive signal that reveals the presence of a nearby companion star orbiting the FRB source. The discovery, published in Science, is based on nearly 20 months of monitoring an active repeating FRB located about 2.5 billion light-years away.

The MoU was signed on 22 December 2025 at HKU as part of a broader HKU–Tsinghua strategic partnership event, during which five MoUs were concluded across diverse fields including public health, engineering, law, and astronomy.

HKU Three Research Projects Named Among “Top 10 Innovation & Technology News in Hong Kong 2025”, Showcasing Excellence in Research and Technology Transfer.