2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/7312These proceedings summarize lectures that were delivered as part of the 2002 and 2003 Theoretical Advanced Study Institutes in elementary particle physics (TASI) at the University of Colorado at Boulder. They are intended to provide a pedagogical introduction to cosmology aimed at advanced graduate students in particle physics and string theory.82 pages, 12 figures, contributions to the TASI-02 and TASI-03 summer schoolsAstrophysicsGeneral Relativity and Quantum CosmologyHigh Energy Physics - PhenomenologyHigh Energy Physics - Theorytext