2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/4735We formulate a Zel'dovich-like approximation for the Chaplygin gas equation of state P = -A/rho, and sketch how this model unifies dark matter with dark energy in a geometric setting reminiscent of M-theory.8 pages, 1 figure, Talk at DARK 2002: 4th International Heidelberg Conference on Dark Matter in Astro and Particle Physics, 4-9 Feb 2002, Cape Town, South AfricaAstrophysicstext