2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/7174The cosmic baryon budget is revisited using modern observations that have become available since our first publication. I also present an estimate for the heavy element abundance. An increased accuracy in the accounting of the baryon budget reveals `missing baryons', which amount to $\approx 35$% of the total. This would provide an interesting test for models of the cosmic structure formation.Invited Talk given at IAU Symposium 220, "Dark Matter in Galaxies", Sydney, 21-25 July, 2003. To be published in the ProceedingsAstrophysicstext