35th Midwest Relativity Meeting and „EricFest“, October 31 – November 2, 2025 at University of Guelph The 35th Midwest Relativity Meeting will be held at the University of Guelph on October 31 to November 2 (Friday to Sunday), 2025. The last day will be a scientific celebration of Eric Poisson’s 60th birthday with invited speakers. Meeting Website

XV ET Symposium, May 26-30 2025 in Bologna The Symposium will be organized in parallel sessions, hosting workshops managed by the ET boards (EIB, ISB, OSB, and SPB), and plenary sessions. The complete timetable is under construction and will soon be released. The registration is open. Symposium Website

Fourth MaNiTou Summer School on Gravitational Waves: A new window to the Universe, Jun 30 – July 5, 2025, Marseille The school is collaboratively organized by scientific communities involved in Gravitational Waves, from 3 French locations in Southern France, namely Marseille, Nice and Toulouse, thus the MaNiTou name for the school. Registration to the 4th edition of the MaNiTou Summer School on Gravitational Waves is now open for registration until April 6th, 2025. School Website

SIGRAV2025, September 8-12, Milano The conference will cover various aspects of Classical and Quantum Gravity, including tests of General Relativity, cosmology, gravity experiments, and gravitational waves from experimental, theoretical, and data-analysis perspectives. Conference Website

Black Holes & Cosmology, August 5-9, 2025 at University of Iceland The purpose of the conference Black Holes & Cosmology is to bring together world-renowned experts as well as junior researchers working on theoretical and observational aspects of black holes, particularly (but not limited to) their rôle in cosmology. Conference Website

Massive Black Holes at EAS 2025, Cork, June 23-24, 2025 Symposium on „Understanding and Interpreting Massive Black Holes in the Early Universe“ at EAS 2025 in Cork, organized by John Regan and Michael Tremmel. This symposium will take place across June 23rd and 24th (first two days or the symposium). Within this session there will be dedicated blocks focused on signatures of massive black hole binaries and the organizers encourage abstracts from the GW community in this direction. Within EAS there are of course multiple other sessions and symposia focused on Massive Black Holes (e.g.Modelling the First Billion Years) all of which may appeal those with research interested in MBH(B)s.…

Summer School, ISAPP GRAVITATIONAL WAVES: from theory to detection, Vienna, July 7-18 2025 Registration is now open for the ISAPP Summer School „GRAVITATIONAL WAVES: from theory to detection“, at the Erwin Schrödinger International Institute for Mathematics and Physics in Vienna. This astroparticle physics graduate school will cover important and timely topics connected to gravitational waves taught by internationally renowned experts. The primary focus will be on understanding how gravitational waves emerge from the theory of general relativity and how these can be detected using modern technologies. School Website

Dark Matter, Dark Energy and the Cosmological Tensions, June 23-27, 2025 at Lake Como The Schools are directed to PhD students and young Post-Docs in Physics, Astronomy and Mathematics who are interested in widening their knowledge in the fields of Physical Cosmology, Relativistic Astrophysics, General Relativity, Experimental Gravity and the Modern Quantum Theories of Gravitation. School Website