2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/201063We study non-degenerate (Petrov type I) silent universes in the presence of a non-vanishing cosmological constant L. In contrast to the L=0 case, for which the orthogonally spatially homogeneous Bianchi type I metrics most likely are the only admissible metrics, solutions are shown to exist when L is positive. The general solution is presented for the case where one of the eigenvalues of the expansion tensor is 0.11 pages; several typos corrected which were still present in CGQ version; minor changesGeneral Relativity and Quantum Cosmologytext