2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/191423We briefly review ideas about ``noncommutativity of space-time'' and approaches toward a corresponding theory of gravity.18 pages, to appear in the Proceedings of the Third Mexican Meeting on Mathematical and Experimental Physics, Symposium on Gravitation and Cosmology, Mexico City, 10-14 September 2007General Relativity and Quantum Cosmologytext