Annual Report 2025

Personal reflections on Johannes Geiss’ 30-year-long legacy at ISSI

Thirty years ago, the dream of a visionary scientist came true. A dream of a very special place where science was the focus, a welcoming international institute where the only language spoken was science, a centre of excellence uniting the scientific community under the same big sky that humanity has looked up to for centuries.

Maurizio Falanga (1969–2025)

The Surprising Expansion History of the Universe

Public Lecture with Adam Guy Riess is an American astrophysicist and Bloomberg Distinguished Professor at the Johns Hopkins University and STScI.

The next 30 years from the discovery of the first exoplanet

The field of Exoplanet science is less than thirty years old, but the discovery that there are planets orbiting stars other than our Sun has revolutionized the way we see the Universe and our place in it. Since the first discovery, almost 6000 exoplanets have been found.

ISSI at the EPSC-DPS 2025 Conference

ISSI was represented at the European Planetary Science Congress – Division for Planetary Sciences (EPSC-DPS) Joint Meeting 2025 in Helsinki with a dedicated exhibition booth, making its presence felt throughout the conference week.

Astronomy on Tap x ISSI: A Full House, Three Brilliant Suns, and One Croissant-Shaped Mystery

Bern’s Astronomy on Tap event sponsored for the first time by ISSI lit up the Stellwerk on November 18, 2025, and not just because nearly 100 people packed into the venue beneath the Grosse Schanze. With every seat filled and glasses raised, the atmosphere was primed for an evening where cutting-edge space science met tasty drinks and great company.