2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/2727This is the written version of the summary talk given at the 20th Texas Symposium on Relativistic Astrophysics in Austin, Texas, on December 15, 2000. After a brief summary of some of the highlights at the conference, comments are offered on three special topics: theories with large additional spatial dimensions, the cosmological constant problems, and the analysis of fluctuations in the cosmic microwave background.16 pages, Latex with one inessential postscript figure. A misprint correctedAstrophysicsGeneral Relativity and Quantum CosmologyHigh Energy Physics - Theorytext