Author(s): Yu-Han Tseng, Clarke A. Hardy, T. W. Penny, Cecily Lowe, Jacqueline Baeza-Rubio, Daniel Carney, and David C. Moore An experiment resolves the tiny momentum transferred from an individual gas molecule to a levitated nanoparticle. [Phys. Rev. Lett. 137, 173601] Published Mon Oct 19, 2026