Photon mass limit: 9.52 × 10-46 kg

Scientists have determined an upper limit for the mass of light, with a photon being no heavier than 9.52 × 10-46 kilograms. This finding challenges the traditional view of photons as massless particles and could impact our understanding of the Universe and physics. The study used data from pulsars and fast radio bursts to derive this limit, emphasizing the need for precise radio telescopes.