News

News

Accelerator Report: A strong finish and a swift transition into the winter break

The 2025 run was successfully completed on 8 December at 6.00 a.m., signalling the start of the year-end technical stop for the LHC and the injector complex

News
Accelerators
12 December, 2025
Accelerators
News
12 December, 2025

Biodiversity by Building 40

A new information panel by Building 40 explains how the lawn has been transformed with a new hedge and meadow for wildlife and well-being

Announcement
At CERN
11 December, 2025
At CERN
Announcement
11 December, 2025

Insights from the global CERN alumni community

Key findings from the 2025 CERN alumni survey highlight the values and expectations of CERN’s worldwide alumni community, what works and what could be improved

News
Knowledge sharing
11 December, 2025
Knowledge sharing
News
11 December, 2025

Computer Security: Your ticket to improvement

The past two years have brought a lot of new computer-security deployments at CERN. Some of these were not the most user-friendly for the CERN community, as this is not in the inherent nature of “security”, but we tried our best

News
Computing
11 December, 2025
Computing
News
11 December, 2025

ALICE solves mystery of light-nuclei survival

Observations of the formation of light nuclei from high-energy collisions may help in the hunt for dark matter

News
Physics
10 December, 2025

Upcoming events

Check out this curated list of upcoming events for the CERN community

Announcement
At CERN
10 December, 2025
At CERN
Announcement
10 December, 2025

LHC delivers a record number of particle collisions in 2025

All experiments broke records in the final full operating year of the third run of the LHC

News
Accelerators
09 December, 2025
Accelerators
News
09 December, 2025

Service availability during CERN’s annual closure 2025/2026

Official news
At CERN
09 December, 2025
At CERN
Official news
09 December, 2025

Official holidays in 2026 and end-of-year closure 2026/2027

(In accordance with Articles R II 4.38 and R II 4.39 of the Staff Regulations)

Official news
At CERN
04 December, 2025
At CERN
Official news
04 December, 2025