LISA Spain Meeting 2026, November 11-12 at IAC3 in Palma This is the third (first in Barcelona 2024, second in Madrid 2025) in a series of meetings devoted to the organisation and scientific collaboration of Spain-based researchers working or interested in the LISA mission. Meeting Website

GW170817: 10 Years Later – August 16-20, 2027 The five-day program covers gravitational-wave detection and sky localization; radio, X-ray, and optical astronomy; modeling and data analysis; and nuclear astrophysics. Rather than confining each theme to its own day, each day combines observational, modeling, and nuclear-physics perspectives. Every day opens with a keynote from a leader in the field, followed by invited talks and short contributed talks, with priority given to early-career speakers for contributed slots. Conference Website

Madrid Winter Workshop on Gravitational Physics 2026, December 14-16 The Madrid Winter Workshop on Gravitational Physics 2026 (MWWGP-2026) is the seventh in a series of Workshops intended to bring together researchers with common interests on the geometric structure of space-time, quantum properties of gravity, modified theories of gravity, cosmology, and astrophysics, and who collaborate or can potentially collaborate among each other via active projects. It will take place on December 14-16th, 2026. This workshop oscillates between Valencia and Madrid, this time being hosted by the Departament of Theoretical Physics and the Instituto de Particulas y Fisica del Cosmos (IPARCOS) of the Complutense University of Madrid, Spain. Workshop Website

Open Quantum Universe Workshop, November 17-20, 2026 at Penn State The Open Quantum Universe Workshop at The Pennsylvania State University, supported by the Gravity Theory Trust, will be a focused event that aims to coordinate and stimulate significant recent interest in the understanding of cosmology as an open, out-of-equilibrium, quantum system. Workshop Website

IAU Webinar Series, October 29–30 2026: Gravitational-Wave Astrophysics & Multimessenger Astronomy Two global sessions bringing together early-career researchers across gravitational-wave astrophysics — from compact-object populations and pulsar timing to LISA, strong lensing and multimessenger science. Webinar Website & sign-up

International LILA Meeting – 2026 Lunar GW Workshop, December 2-4 in Pisa This meeting continues community discussions on the Laser Interferometer Lunar Antenna (LILA) project – a proposed detector on the lunar surface to measure gravitational waves in the mid-band between ground-based detectors LIGO–Virgo–KAGRA and the future space mission LISA. The 2026 workshop will focus on defining LILA’s science goals, instrument architecture, and deployment timeline, while expanding and strengthening the global LILA community. Meeting Website

CosmoFONDUE 2027, January 25-29 at CERN The conference Cosmological Fundamental Observables and Novel Discoveries in Universe Evolution (CosmoFONDUE) aims at offering an occasion for scientists across all fields of cosmology to interact in an engaging and inclusive atmosphere, and to reflect on promising new research directions. A special focus is put on fostering exchange among junior and senior researchers. Conference Website

3rd GWCats Workshop, November 23–25 2026 in Toulouse We are pleased to announce the Third GWCats workshop which will take place in Toulouse, France, from 23 to 25 November 2026. More details and registration are available on the workshop Website. Registration is open until the 1st of November 2026 and limited to a maximum of 60 participants. Workshop Website

Gravity 2027 – RESCEU International Symposium on Quantum Aspects of Gravity, February 15–19, 2027, Tokyo The aim of the symposium is to foster comprehensive and in-depth discussions on the rapidly expanding frontiers of gravitational physics. The program will cover a wide spectrum of topics related to quantum aspects of gravity, including string/quantum gravity, quantum cosmology, quantum field theory in curved spacetime, inflationary quantum fluctuations, quantum effects on gravity experiments, and so on. Symposium Website

XIX Black Holes Workshop, December 17-18 2026, Lisbon From astrophysics to high-energy physics, from information theory to quantum gravity, black holes have acquired an ever increasing role in fundamental physics, and are now part of the terminology of many important branches of observational, theoretical and mathematical physics. Workshop Website