2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/5221Observations seem to indicate that our universe is presently accelerating due to the presence of dark energy. Quintessence represents a possible way to model the dark energy. In these proceedings, we briefly review its main properties.4 pages, 3 figures. Invited talk given by J. Martin at the Sf2a meeting (June 24-29, 2002, Paris)Astrophysicstext