Discussions this week at the Open Symposium of the European Strategy for Particle Physics demonstrate strong progress towards ensuring that CERN remains a world leader in collider physics and technology

On 21 June 2025, Slovenia became a Member State of CERN

On 16 May 2025, CERN Director-General Fabiola Gianotti and Minister of Science, Technology, Knowledge and Innovation of Chile, Aisén Etcheverry signed an agreement admitting Chile as an Associate Member State of CERN

On 8 May 2025, CERN Director-General Fabiola Gianotti and Irish Minister for Further and Higher Education, Research, Innovation and Science James Lawless signed an agreement admitting Ireland as an Associate Member State of CERN

Substantial contributions to the 2026 update of the European Strategy for Particle Physics set the stage for discussions that will define the next flagship collider at CERN

On 27 May 2025, twenty photographers will be given an exclusive opportunity to explore the world’s largest particle physics laboratory.

Professor Thomson’s five-year mandate will begin on 1 January 2026

A special high-level ceremony held at CERN crowned a year-long celebration taking place across Europe and beyond

The CERN Council has announced that Professor Costas Fountas will become its 25th President beginning on 1 January 2025

Estonia becomes the first Baltic country to join CERN as a full Member State