A cutout of SPT-3G data (left) showing microwave signals, alongside a map (right) with colorful boxes marking confirmed galaxy clusters detected in the same region. These maps represent approximately 0.5% of the main field survey area. (Image by SPT-3G Collaboration/Argonne National Laboratory.)
South Pole Telescope analysis yields catalog of more than 7,000 galaxy clusters
An Argonne-led research team has released a catalog of more than 7,000 confirmed galaxy clusters from five years of South Pole Telescope data, opening a powerful new window into the large-scale structure and evolution of the universe.
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The LHC is currently shut down. Teams will now dismantle 1.2 kilometres of the accelerator to install the new HiLumi LHC equipment. This will be connected to the equipment installed in the new HiLumi LHC galleries, such as the new cryogenic line, sections of which were delivered last spring (Image: CERN)
CERN bids farewell to the LHC and enters Long Shutdown 3
Today, the Large Hadron Collider (LHC), the world’s most powerful particle accelerator, comes to the end of an extraordinary chapter in its scientific journey. Following its final physics run, the accelerator has been switched off to begin CERN’s Long Shutdown 3 (LS3), a major programme of maintenance, consolidation, upgrades and installation work that will prepare the Laboratory for the High-Luminosity LHC (HiLumi LHC), the next phase in the exploration of the fundamental laws of nature.
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View of the CLOUD experiment (image: CERN)
CLOUD experiment uncovers a major new source of marine aerosol particles
In a paper published today in the journal Nature, the CLOUD Collaboration at CERN reports that natural emissions from phytoplankton are producing far more aerosol particles than previously thought, changing our understanding of aerosols and clouds in pristine climates from before the industrial era and after the fossil fuel era
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CERN’s impact extends far beyond the boundaries of fundamental research, from education to collaboration between nations, and including applications for space, medicine, energy and electronics (Credit: CERN, Mars Bioimaging and Axiom Space)
New study highlights CERN’s socio-economic contributions as a global research hub
The newly published study Assessment of the socio-economic benefits of CERN activities reports on CERN’s activities over the past 25 years and highlights a range of socio-economic benefits generated by the Laboratory’s role as a global hub for science, technology and collaboration.
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Request for Nomination of Candidates for the Next Director of J-PARC Center
The J-PARC Center, which is jointly operated by the Japan Atomic Energy Agency (JAEA) and the High Energy Accelerator Research Organization (KEK), invites nomination of candidates for the next Director for the term starting on April 1, 2027. For the details of J-PARC and J-PARC Center, please visit our website at https://www.j-parc.jp/c/en/.
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Photo of the Belle II detector © Belle II Collaboration/KEK
Belle II accumulates the world’s largest Y(4S) dataset
The Belle II experiment at the SuperKEKB accelerator, which is one of KEK’s flagship projects, accumulates a vast number of B meson events to search for new physics beyond the Standard Model. At SuperKEKB, B mesons are produced from electron-positron annihilation at the Υ(4S) (Upsilon-4S) resonance. To maximize this dataset, the project continuously pursues world-leading performance while overcoming various challenges.
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Winners of the 2026 CERN Beamline for Schools competition: “Team PionIST 3” from Türkiye (top left), “Team POLARIS” from Bangladesh (top centre), “Team Mobile MIPs” from the UK (right), “Team Centauri Stars” from the USA (bottom left) and “Team attoPION” from India (bottom centre). (Images: Team PionIST 3, POLARIS, Team Mobile MIPs, Team Centauri Stars, Team attoPION).
Students from Bangladesh, India, Türkiye, the UK and the USA win the 13th edition of Beamline for Schools
The winners of the 13th edition of the Beamline for Schools (BL4S) competition have been selected. BL4S is a physics competition that was initiated by CERN, the European Laboratory for Particle Physics, and is open to secondary school pupils from all around the world. Participants are invited to submit a proposal for a physics experiment to be undertaken at the beamline of a particle accelerator, either at CERN or at one of the partner institutes: DESY (Deutsches Elektronen-Synchrotron in Hamburg, Germany) and ELSA (Elektronen-Stretcher-Anlage of the University of Bonn, Germany). In 2026, five winning teams have been chosen, based on the scientific merit of their proposals.
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Artistic representation of the Future Circular Collider (FCC-ee) (Image: CERN)
The CERN Council decided to update the European Strategy for Particle Physics
Today, following more than two years of intense work of the European particle physics community under the auspices of the European Strategy Group, the CERN Council updated the European Strategy for Particle Physics [link to Resolution], which sets out an ambitious scientific vision for the field. The 2026 Strategy update offers a clear path to maintain European leadership in high-energy physics while attracting global collaboration to CERN, advancing technology and bringing many potential benefits to society. The recommendations [link to Recommendations] address a broad range of topics and goals relating to research in high-energy physics in Europe and beyond.
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Cover of the English Edition Tactile Graphics Collection Produced in This Project
Production of the English Edition Tactile Graphics Collection “Origins of the Universe and Matter”
The Institute of Particle and Nuclear Studies (IPNS) at the High Energy Accelerator Research Organization (KEK), in collaboration with Tsukuba University of Technology, has produced an English edition tactile graphics collection titled “The Origin of the Universe and Matter: Understanding the ‘Invisible World’.” This collection has been donated to organizations supporting visually impaired individuals, as well as to universities and research institutions around the world.
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