China's FAST telescope releases largest neutral hydrogen survey, surpassing US survey

China's FAST telescope released the second batch of its All-Sky H I Survey, cataloguing 156,411 extragalactic neutral hydrogen sources, nearly five times the number in the previous US-led survey. This establishes FASHI as the primary reference for mapping the gas that fuels star and galaxy formation, marking a shift in scientific leadership in radio astronomy. The data's full scientific impact will depend on subsequent analysis and independent verification.