Universe Unravelled: Cosmic Strings at 50, September 1-5, 2026 in Cambridge In a seminal paper in 1976, Tom Kibble first proposed the notion of cosmic strings, and a rich legacy of research in the field has followed over the past fifty years. A central goal of this Universe Unravelled workshop will be to revisit unresolved questions about cosmic strings that underpin predictions for cosmological observables, ranging from gravitational wave signals to axion masses. The workshop is intended to prioritise discussion with ample time to develop collaborative directions that could advance these outstanding challenges. The workshop is intended to prioritise discussion with ample time to develop collaborative directions that could advance…

From Quantum Gravity to Cosmology, September 28 – October 2, 2026 in Kashiwa This workshop will bring together researchers in quantum gravity and cosmology to discuss major open questions at the interface between the two fields. Although the CDM model has been remarkably successful, increasingly precise cosmological observations have also brought a number of challenges and tensions into sharper focus. At the same time, substantial progress in quantum gravity, particularly in its applications to cosmology, has opened new possibilities for investigating the quantum origin of the universe and for seeking a more fundamental understanding of both the successes and the possible limitations of the standard cosmological model. Workshop Website

10th Roma International Conference on Astroparticle Physics, September 7-11 2026 The 10th edition of the Conference will be hosted by the Sapienza University of Roma. The aim of the Conference will be to present and discuss some of the most relevant theoretical and experimental results in the field of high energy cosmic radiations (gamma, neutrinos, charged cosmic rays). Special attention will be paid to the multi-messenger search for high energy cosmic rays sources, including gravitational wave searches. Conference Website

5th Einstein Telescope Annual Meeting, November 23-27 2026 in Prague The 5th Einstein Telescope Annual Meeting will take place in the beautiful historical city of Prague and it presents an important opportunity to discuss key aspects of the ET collaboration and design. Hosted by FZU – Institute of Physics of the Czech Academy of Sciences, the event will be held directly at FZU premises. Meeting Website

Precision Gravitational Wave Astronomy: From Theory to Discovery July 27-31 in Sexten, Italy With upcoming detectors on the ground and in space, we will be able to detect black holes at the edge of the observable universe and test general relativity in its most extreme regimes. However, as the measurements become more sensitive, so does the challenge of interpreting them. Small anomalies in the data could point to new physics—or just reflect environmental effects, modeling uncertainties, or instrumental noise. This workshop, part of the ERC synergy GWSky project, will bring together researchers working across theory, simulations, and observations to tackle this challenge, and build the tools and frameworks needed to…