Key Points A new 3D velocity method provides direct gravity measurement in wide binary stars. The method surpasses older 2D-based models by incorporating full velocity data. Initial findings suggest gravity is 40–50% stronger than Newtonian predictions at low acceleration. The deviation has high statistical significance (4.2σ), aligning with MOND theory. Astrophysicist Kyu-Hyun Chae from Sejong University has developed a groundbreaking method for measuring gravity using full 3D velocity data of wide binary stars, opening new avenues in the study of...