2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/222888We review the foundations of Einstein's general theory of relativity, discuss recent progress in the tests of relativistic gravity, and present motivations for new generation of high-accuracy gravitational experiments. We discuss the advances in our understanding of fundamental physics anticipated in the near future and evaluate discovery potential of the recently proposed gravitational experiments.18 pages, 9 figures, invited talk given at the "Atomic Clocks and Fundamental Constants - ACFC 2007, Bad Honnef 2007; to appear in EPJ Special TopicsGeneral Relativity and Quantum Cosmologytext