2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/36576We review cosmological relativity, a new special theory of relativity that was recently developed for cosmology, and discuss in detail some of its aspects.15 pages; invited talk at the Fourth Alexander Friedmann Seminar on Gravitation and Cosmology; accepted for publication in Intern. J. Theor. Phys., to appear July 1999General Relativity and Quantum CosmologyAstrophysicsMathematical Physicstext