2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/120900It has recently been suggested that observed galaxy rotation curves can be accounted for by general relativity without recourse to dark-matter halos. A number of objections have been raised, which have been addressed by the authors. Here, the calculation of tangential velocity is questioned.AstrophysicsComment on the Relativistic Galactic Model by Cooperstock and Tieutext