Over the past five years, numerical simulations of galaxy formation have quietly passed a key milestone. The latest cosmological simulations are now able to resolve the sites of star formation and the impact of individual stellar feedback events. In this talk, I explain how this has led to a new level of realism that makes simulations more

Large aperture ultra-precision mirrors are critical components in next-generation astronomical telescopes such as the China Space Station Telescope（CSST） and the MUltiplexed Survey Telescope（MUST）. However, traditional 5/6-axis CNC "Box machines" combined with sub-aperture polishing techniques (CCOS, MRF, IBF) face challenges in cost-effectiveness