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CERN is the European laboratory for particle physics, home to the #LHC. All media © CERN, human-generated unless otherwise stated.
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Recent posts
The ATLAS Inner Tracker Strips Endcap begins to bloom 🌸
Just as flowers are supported by their stems, the “petals” of silicon detectors in the ATLAS Inner Tracker (ITk) Strips Endcaps depend on service modules that supply power, control signals and cooling.
On 14 October, colleagues from @_nikhef , @follow.desy (Germany) and @ific_csic.uv (Spain) joined forces to install the first service module in an ITk Strips Endcap at Nikhef in the Netherlands, bringing the detector one step closer to completion.
The ITk is a next-generation tracking detector for the @atlasexperiment, designed to map the trajectories of charged particles to a precision of a millionth of a metre during #HiLumiLHC operation.
06 Nov 2026
Can you guess what this is? 🤔
Hint: It’s linked to an experiment to study neutrinos
We’ll share the answer on Monday.
05 Nov 2026
Science meets music in the dark 🎶
#ThrowbackThursday to last Friday’s Dark Matter Night, a special evening celebrating #DarkMatterDay with science and culture, that took place at CERN Science Gateway.
The evening featured a live radio programme exploring the mystery of dark matter, and the relationship between art and science, along with a live concert by local artists, in partnership with @radiovostok
#DidYouKnow: Dark matter is an invisible substance thought to account for nearly a quarter of the Universe?
05 Nov 2026
A rainy night at the Globe ☔
This #PhotoOfTheWeek captures the Globe of Science and Innovation glowing on a rainy evening.
A unique landmark by day and night, the Globe is a symbol of planet Earth, and it’s about the same size as the dome of Saint Peter’s in Rome, standing 27 metres high and measuring 40 metres in diameter.
It hosts public events such as conferences, workshops, artistic performances and exhibitions.
#DidYouKnow:the Globe is currently hosting a new exhibition named “Why? It matters.”, open until 28 February 2027, which explores the questions shaping the future of #particlephysics.
04 Nov 2026
A new chapter for Open Research Europe 💫
Publishing platform expands eligibility and relaunches with CERN as its new host.
Open Research Europe (ORE), the open-access publishing platform, has entered a new phase as a collective European publishing service, now operated by CERN.
The relaunch expands eligibility beyond researchers funded through European Union programmes, giving more than 2.5 million scientists access to the platform.
#OpenScience
03 Nov 2026
LHCb finds evidence of one-in-ten-billion particle decay 🔍
If confirmed, this beauty-particle decay would be the rarest ever observed.
As announced in a seminar held #AtCERN today, the @lhcbexperiment has found evidence of a one-in-ten-billion decay of a beauty particle, becoming the first to do so using data from a single experiment.
03 Nov 2026
📣 High-school students, here’s your chance to work as a real scientist!
Beamline for Schools (#BL4S) is a competition that gives high-school students from around the world the chance to propose and carry out their own physics experiments using particle accelerator beams.
If you are a high-school student with an idea for a #physics experiment to conduct at a particle accelerator, submit your proposal to win the chance to spend two weeks at CERN, Deutsches Elektronen-Synchrotron DESY or Electron Stretcher Facility ELSA to perform your experiment.
📅 Submit your experiment proposals from 1 December 2026 until 12 March 2027
🔗 Apply now: cern.ch/bl4s
02 Nov 2026
Can you guess the experiment? 🤔
Hint: this experiment sits 56 metres below ground.
Here we see the journey from the #LHC tunnel all the way to the @alice_experiment detector, in its vast cavern, 56 metres below ground.
ALICE is CERN’s dedicated heavy-ion physics experiment, and just like the rest of the accelerator complex #AtCERN, it is currently undergoing major upgrade work.
These upgrades are in preparation for the #HiLumiLHC, which will dramatically improve the performance of the accelerator and bring an increased number of collisions.
30 Oct 2026
In the wake of partons 🌊
The @cmsexperiment reports the first direct observation of a “wake” formed by a parton travelling through quark–gluon plasma.
By studying the quark–gluon plasma recreated by lead-nuclei collisions in the #LHC, the CMS Collaboration has directly observed how particles travelling through it leave a pattern similar to the wake left by a boat.
The image shows artist Larisa Barannikova’s impression of the wake left behind by a particle travelling through quark–gluon plasma.
29 Oct 2026
The beam stops here 🛑
#ThrowbackThursday to September 1980 at the Super Proton Synchrotron (SPS), the second-largest machine in CERN’s accelerator complex.
Here we see the Target Beam Stopper Mobile (TBSM), a water-cooled beam dump designed to absorb the energy of the particles in a beam, which could move up and down.
This ability to move allowed the beam stopper to stay out of the beam line during normal operation and to protect the experts working in the accelerator tunnels.
#DidYouKnow: In 1983, running as a proton-antiproton collider, the SPS delivered the @NobelPrize winning discovery of the W and Z particles.
29 Oct 2026
@DUNEscience is looking to unlock the secrets of "ghost particles."
Neutrinos rarely interact with matter, making them ghosts in the cosmos. These elusive particles might also hold the key to some of the biggest questions in physics, such as why the universe is made of matter.
The Deep Underground Neutrino Experiment is building upon a 70-year legacy of neutrino research and will be the largest neutrino experiment of its kind.
The world's most intense neutrino beam will be fired from Fermilab 800 miles through the Earth to @SanfordLab, where the DUNE far detectors are being built.
Soon, Fermilab, @CERN and Sanford Lab will move DUNE one step closer to unlocking long-standing mysteries in particle physics and the origins of the universe.
#DUNEscience #neutrinos #Fermilab #CERN #SanfordLab
28 Oct 2026
‘Tis the season of trick-or-treating… and #DarkMatter 🎃
#DidYouKnow that visible matter makes up only about 5% of the Universe? The rest is dark matter (27%) and dark energy (68%). Shining light on their mysteries is a key challenge for modern science.
Every year, #DarkMatterDay takes place as the same time as Halloween, so, to celebrate the two,CERN’s #PhotoOfTheWeek features Jack-o’-lanterns in front of the Globe of Science and Innovation.
The top pumpkin is carved with the @atlasexperiment logo and the bottom one shows an event display – a visual representation of data produced by a particle collision inside the ATLAS detector.
28 Oct 2026
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