XVI Einstein Telescope Symposium, June 15-19 2026 in Aachen The upcoming Symposium will take place in Aachen from June 15th at noon until June 19th early afternoon. Hosted by the RWTH Aachen University, the event will be held at the central campus of the University in the heart of the city of Aachen. Registrants can also participate in every session online via a two-way zoom connection. Zoom links for each session can be found as an attachment to the session in the Indico timetable. Symposium Website

Supermassive Black Holes and Blue Notes, June 29 – Juli 3 2026 at Université de Montréal Held a week before the world-renowned Montreal International Jazz Festival, the conference aims to spotlight the significant progress made in the study of supermassive black holes, addressing open questions and exploring future prospects, particularly in the wake of the latest observations from JWST. Conference Website

From Black Holes to the Cosmos, August 24-28 at SISSA, Trieste This conference honors the scientific legacy of Matt Visser, whose pioneering work has profoundly influenced our understanding of general relativity, quantum field theory in curved spacetime, wormholes, energy conditions, analogue gravity, and beyond. Conference Website

16th International LISA Symposium, June 22-26, 2026, College Park, Maryland The 16th International LISA Symposium will highlight gravitational wave astrophysics, with a primary focus on the most up-to-date theory and analysis that will inform science to be performed by the Laser Interferometer Space Antenna. Conference Website

Gravity2026: New Frontiers in Cosmology, April 27 – May 1 2026 in Daejeon The aim of the workshop 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 central to cosmology, including gravitational waves, early- and late-time cosmology, and theories of modified gravity. Workshop Website

WE Heraeus Physics School und 62. Karpacz Winter School in Theoretical Physics „Multimessenger Astrophysics and Cosmology“, February 28 – March 6 2026 in Karpacz With next-generation observatories like the Einstein Telescope and Cosmic Explorer, multi-messenger astrophysics—combining gravitational waves, electromagnetic signals, and neutrinos—will sharpen constraints on the dense-matter equation of state, extreme gravity, and heavy-element nucleosynthesis. Mergers also serve as standard sirens, enabling independent measurements of the Hubble constant. The school will cover the thermal history of the Universe after its first second, from the quark–hadron transition to neutrino decoupling, linking microphysics to cosmological observables. School Website

Einstein Telescope science workshop for early career Researchers, February 18-20, 2026 at Sapienza University of Rome The workshop wants to bring together young researchers actively involved in the activities of the Observational Science Board (OSB), Instrumental Science Board (ISB) and Site Characterization Board (SCB) of the Einstein Telescope. Leaving plenty of room for discussions, it will be a great occasion to share research and ideas, start projects, learn about new topics, and build collaborations. Workshop Website

Neutron Stars: Modelling and Detection – SIGRAV International School 2026, February 16-20 in Vietri sul Mare This edition of the Italian Society of General Relativity and Gravitation (SIGRAV) International School is dedicated to the study of neutron stars as outstanding sources of gravitational and electromagnetic waves in the strong-field regime. School Website

Einstein Telescope Vacuum and Cryogenics Industrial Workshop: opportunities and challenges, April 21–22 2026 at CERN The purpose of the workshop is to bring together the leading institutes which are designing the vacuum and cryogenic systems of the Einstein Telescope (the third generation gravitational wave detector which is currently being designed in Europe) and European Big Science industries specialised in vacuum and cryogenic technologies, to discuss the challenges and opportunities ahead. Workshp Website

Summer school on Multimessenger Astrophysics at ICE in Barcelona, July 6-14 2026 9th edition of the ICE Summer School devoted to Multimessenger Astrophysics. This intensive programme is designed for advanced Master’s and PhD students, early-career researchers, andothers interested in the physics and observational techniques associated with multimessenger phenomena in the universe. School Website