2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/13621A photon's observed wavelength tells an astronomical detector about the amount of position information obtained by observing that photon. This amount of position information may depend on time in a way which, to first order over distances small compared to the size of the universe, might account for the cosmological redshift.4 pages; LaTeX2e; in press, International Journal of Theoretical PhysicsAstrophysicstext