Albert Einstein Century International Conference, Date: 18 July 2005 through 22 July 2005, Location: Paris, Sponsors: Centre National de la Recherche Scientifique (CNRS);Observatoire de Paris;Commissariata l'Energie Atomique (CEA);Centre National d'Etudes Spatiales (CNES);Laboratoire Univers et Theories (LUTh)