Resumen de Mass change.
This article reports that physicists have found that the masses of protons or electrons might have varied over time, despite the fact that these constants of nature are expected to stay constant. Researchers investigated the wavelengths absorbed by hydrogen gas irradiated with extreme ultraviolet laser beams in a laboratory. In "Physical Review Letters," the scientists reports that the proton-to-electron mass ratio has apparently decreased by one fifty-thousandth in the interval since the universe's youth.
