General Relativity and Gravitation is a journal devoted to all aspects of modern gravitational science, and published under the auspices of the International Society on General Relativity and Gravitation. It welcomes in particular original articles on the following topics of current research: Analytical general relativity, including its interface with geometrical analysis Numerical relativity Theoretical and observational cosmology Relativistic astrophysics Gravitational waves: data analysis, astrophysical sources and detector science Extensions of general relativity Supergravity Gravitational aspects of string theory and its extensions Quantum gravity: canonical approaches, in particular loop quantum gravity Quantum Gravity: path integral approaches, in particular spin foams, Regge calculus and dynamical triangulations Non-commutative geometry and gravitation Experimental gravity, in particular tests of general relativity The journal publishes articles on all theoretical and experimental aspects of modern general relativity and gravitation, as well as book reviews and historical articles of special interest. Article Types Research articles: presenting original research results Letters: summarizing new results of interest to researchers whose primary interest lies in nearby areas, but who would typically not be interested in complete derivations, details of numerical simulations, etc. (limited to 8 journal pages) Invited reviews: detailed status reports or short summarzing reviews Golden Oldies: republications of seminal papers, both, well-known or 'hidden treasures' A few selected papers will be marked Editor's Choice: the primary criteria will be original, high-quality research that is of wide interest within the community.