2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/116925We speculate that the universe may be filled with a visco-elastic continuum which may be called aether. Thus, the Maxwell's equations in vacuum are derived by methods of continuum mechanics based on a continuum mechanical model of vacuum and a singularity model of electric charges.9 pages, 0 figures, REVTeX 4General Physicstext