Marcel Grossmann Meetings are formed to further the development of General Relativity by promoting theoretical understanding in the fields of physics, mathematics, astronomy and astrophysics and to direct future technological, observational, and experimental efforts. In these meetings are discussed recent developments in classical and quantum gravity, general relativity and relativistic astrophysics, with major emphasis on mathematical foundations and physical predictions, with the main objective of gathering scientists from diverse backgrounds for deepening the understanding of spacetime structure and reviewing the status of test-experiments for Einstein's theory of gravitation. The range of topics is broad, going from the more abstract classical theory, quantum gravity and strings, to the more concrete relativistic astrophysics observations and modeling.

Geometry From the Spectral Point of View, the Spectral Model of Space-Time (Alain Connes); The Formation of Black Holes by the Focusing of Incoming Gravitational Waves (Demetrios Christodoulou); On the Minimum Size of Astrophysical Compact Objects (Hernando Quevedo); Black Holes as a Source of Information (Juan Maldacena); Black Hole Entropy in the Extremal Limit (Ashoke Sen); Transplanckian String Collisions: An Update (Gabriele Veneziano); Ultraviolet Divergences and Scale-Dependent Coupling in Quantum Gravity (Herbert Hamber); Black Holes and Linear Waves (Igor Rodnianski); The Emerging Global Network of Gravitational Wave Detectors: LIGO and Virgo Open a New Window to the Universe (David Reitze); "Analytical Relativity" of Black Holes (Thibault Damour); Detection of Gravitational Waves with Pulsar Timing (Dick Manchester); Relativistic Spin-Precession in Binary Pulsars (Michael Kramer); Ground-Based Observations of Gamma-Ray Bursts: Latest Highlights from Large and Robotic Telescopes (Massimo Della Valle); Gamma-Ray Bursts in the Swift/Fermi Era (Tsvi Piran); Fundamental Physics from Black Holes, Neutron Stars and Gamma-Ray Bursts (Remo Ruffini); The Fascinating TeV Sky (Felix Aharonian); Galaxy Clusters and Their Central Supermassive Black Holes (Eugene Churazov); Intergalactic Shock Fronts (Maxim Markevich); Studying Dark Energy by Counting Galaxy Clusters (Alexey Vikhlinin); Weak Gravitational Lensing and Cosmology (Yannick Mellier); and other papers.