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Welcome back to Earth, Sławosz!

CERN engineer Sławosz Uznański-Wiśniewski, who is currently an ESA astronaut, has landed back on Earth. He left the International Space Station on 14 July after 20 days in space and landed safely on 15 July off the Californian coast

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At CERN
15 July, 2025
At CERN
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15 July, 2025

Stellar, meet the explorers of space and the Universe

This event will bring together renowned scientists and astronauts to talk about their research and expeditions

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At CERN
14 July, 2025

ATLAS closes in on rare Higgs decays

The ATLAS collaboration finds evidence of Higgs-boson decays to muons and improves sensitivity to Higgs-boson decays to a Z boson and a photon.

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Physics
11 July, 2025
Physics
News
11 July, 2025

Bike to Work 2025: Pedalling towards a climate-conscious commute

The 2025 challenge encouraged more colleagues to cycle to CERN than ever before

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At CERN
09 July, 2025

A century of quantum mechanics

On 9 July 1925, in a letter to Wolfgang Pauli, Werner Heisenberg revealed his new ideas, which were to revolutionise physics

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Physics
09 July, 2025
Physics
News
09 July, 2025

Celebrating the outstanding achievements of the ATLAS collaboration

The ATLAS collaboration celebrated the dedication, ingenuity and collaborative spirit of its members at the 8th Outstanding Achievement Awards

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Experiments
08 July, 2025

Computer Security: Internet of Damn Insecure Stupid Things

Here are some examples of the Internet of Damn Insecure Stupid Things that were deployed (or intended to be) at CERN. Be prepared to shake your head

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Computing
04 July, 2025

Slovenian flag raised at CERN

The Slovenian flag was raised today at a ceremony held at CERN to mark the country’s accession as CERN’s 25th Member State

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At CERN
03 July, 2025
At CERN
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03 July, 2025

First-ever collisions of oxygen at the LHC

The Large Hadron Collider gets a breath of fresh air as it collides beams of protons and oxygen ions for the very first time. Oxygen–oxygen and neon–neon collisions are also on the menu of the next few days

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Accelerators
01 July, 2025
Accelerators
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01 July, 2025

Levitation: CERN’s new temporary exhibition explores space and time through glass art

Glass sculptures by Slovak artist Ján Zoričák, some created using materials from CERN experiments, are on display at the Globe of Science and Innovation until 24 August

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At CERN
30 June, 2025