CERN
@cern.bsky.social
CERN is the European laboratory for particle physics, home to the Large Hadron Collider.
linktr.ee/CERN_official
linktr.ee/CERN_official
Ho, ho, ho under CERN’s mistletoe 🧑🎄
Today’s #PhotoOfTheWeek features CERN’s "Father Christmas" team touring the Laboratory just before Christmas Eve, all the way from the #LHC tunnel to the @atlasexperiment.bsky.social and @cmsexperiment.bsky.social detectors.
Today’s #PhotoOfTheWeek features CERN’s "Father Christmas" team touring the Laboratory just before Christmas Eve, all the way from the #LHC tunnel to the @atlasexperiment.bsky.social and @cmsexperiment.bsky.social detectors.
December 24, 2025 at 9:00 AM
Ho, ho, ho under CERN’s mistletoe 🧑🎄
Today’s #PhotoOfTheWeek features CERN’s "Father Christmas" team touring the Laboratory just before Christmas Eve, all the way from the #LHC tunnel to the @atlasexperiment.bsky.social and @cmsexperiment.bsky.social detectors.
Today’s #PhotoOfTheWeek features CERN’s "Father Christmas" team touring the Laboratory just before Christmas Eve, all the way from the #LHC tunnel to the @atlasexperiment.bsky.social and @cmsexperiment.bsky.social detectors.
CERN Highlights 2025
As the year comes to a close, we reflect on some of the highlights from this remarkable year at CERN. We are looking forward to 2026 as we continue to search for what’s beyond the horizon.
Watch here: youtu.be/X_OoXSMXyLg?...
As the year comes to a close, we reflect on some of the highlights from this remarkable year at CERN. We are looking forward to 2026 as we continue to search for what’s beyond the horizon.
Watch here: youtu.be/X_OoXSMXyLg?...
December 19, 2025 at 3:49 PM
CERN Highlights 2025
As the year comes to a close, we reflect on some of the highlights from this remarkable year at CERN. We are looking forward to 2026 as we continue to search for what’s beyond the horizon.
Watch here: youtu.be/X_OoXSMXyLg?...
As the year comes to a close, we reflect on some of the highlights from this remarkable year at CERN. We are looking forward to 2026 as we continue to search for what’s beyond the horizon.
Watch here: youtu.be/X_OoXSMXyLg?...
Reposted by CERN
🎁 The supporting structure of the new CMS HGCAL detector has arrived at @cern.bsky.social for assembly!
🛳️ 🚚 After an eight-week journey, the first HGCAL absorber structure was delivered and is ready to be assembled ready for #HiLumi!
👉 cms.cern/news/support...
🛳️ 🚚 After an eight-week journey, the first HGCAL absorber structure was delivered and is ready to be assembled ready for #HiLumi!
👉 cms.cern/news/support...
December 19, 2025 at 9:29 AM
🎁 The supporting structure of the new CMS HGCAL detector has arrived at @cern.bsky.social for assembly!
🛳️ 🚚 After an eight-week journey, the first HGCAL absorber structure was delivered and is ready to be assembled ready for #HiLumi!
👉 cms.cern/news/support...
🛳️ 🚚 After an eight-week journey, the first HGCAL absorber structure was delivered and is ready to be assembled ready for #HiLumi!
👉 cms.cern/news/support...
This is TELMAX (Test Line for Machine and Antimatter eXperiments), the world’s first test beamline using antiprotons, located at CERN’s Antimatter Factory.
December 19, 2025 at 7:30 AM
This is TELMAX (Test Line for Machine and Antimatter eXperiments), the world’s first test beamline using antiprotons, located at CERN’s Antimatter Factory.
Private donors pledge 860 million euros for CERN’s Future Circular Collider
A consortium of private donors (individuals and philanthropic foundations) have agreed to support the proposed Future Circular Collider at CERN
Find out more: home.cern/news/press-r...
A consortium of private donors (individuals and philanthropic foundations) have agreed to support the proposed Future Circular Collider at CERN
Find out more: home.cern/news/press-r...
December 18, 2025 at 2:05 PM
Private donors pledge 860 million euros for CERN’s Future Circular Collider
A consortium of private donors (individuals and philanthropic foundations) have agreed to support the proposed Future Circular Collider at CERN
Find out more: home.cern/news/press-r...
A consortium of private donors (individuals and philanthropic foundations) have agreed to support the proposed Future Circular Collider at CERN
Find out more: home.cern/news/press-r...
The magic of Christmas #AtCERN 🎄
This #ThrowbackThursday brings you back to winter celebrations at the Laboratory over the years.Which picture is your favourite? 👇
This #ThrowbackThursday brings you back to winter celebrations at the Laboratory over the years.Which picture is your favourite? 👇
December 18, 2025 at 9:00 AM
The magic of Christmas #AtCERN 🎄
This #ThrowbackThursday brings you back to winter celebrations at the Laboratory over the years.Which picture is your favourite? 👇
This #ThrowbackThursday brings you back to winter celebrations at the Laboratory over the years.Which picture is your favourite? 👇
A cryogenic winter for tomorrow’s accelerator 💫
The first large refrigerators for the #HiLumiLHC have been installed. Here we see the delivery of a cold box on the @atlasexperiment.bsky.social site.
Find out more: home.cern/news/news/ac...
The first large refrigerators for the #HiLumiLHC have been installed. Here we see the delivery of a cold box on the @atlasexperiment.bsky.social site.
Find out more: home.cern/news/news/ac...
December 18, 2025 at 7:52 AM
A cryogenic winter for tomorrow’s accelerator 💫
The first large refrigerators for the #HiLumiLHC have been installed. Here we see the delivery of a cold box on the @atlasexperiment.bsky.social site.
Find out more: home.cern/news/news/ac...
The first large refrigerators for the #HiLumiLHC have been installed. Here we see the delivery of a cold box on the @atlasexperiment.bsky.social site.
Find out more: home.cern/news/news/ac...
CERN hits one exabyte of stored experimental data from the LHC #LHC 📈
One million terabytes of experimental data from the Large Hadron Collider have now been sent to the CERN storage system.
Find our more: home.cern/news/news/co...
One million terabytes of experimental data from the Large Hadron Collider have now been sent to the CERN storage system.
Find our more: home.cern/news/news/co...
December 17, 2025 at 9:44 AM
CERN hits one exabyte of stored experimental data from the LHC #LHC 📈
One million terabytes of experimental data from the Large Hadron Collider have now been sent to the CERN storage system.
Find our more: home.cern/news/news/co...
One million terabytes of experimental data from the Large Hadron Collider have now been sent to the CERN storage system.
Find our more: home.cern/news/news/co...
Today, CERN’s #PhotoOfTheWeek features a series of images captured by Erik Kuna during the 2025 CERN Photowalk competition, held earlier this year. #PhysPics25
Image size has been adjusted to fit platform requirements.
Image size has been adjusted to fit platform requirements.
December 17, 2025 at 8:18 AM
Today, CERN’s #PhotoOfTheWeek features a series of images captured by Erik Kuna during the 2025 CERN Photowalk competition, held earlier this year. #PhysPics25
Image size has been adjusted to fit platform requirements.
Image size has been adjusted to fit platform requirements.
Celebrating two decades of global scientific computing
Developed to handle the vast amounts of data of the #LHC experiments, the Worldwide LHC Computing Grid (WLCG) has significantly marked the landscape of distributed computing.
Find out more: home.cern/news/news/co...
Developed to handle the vast amounts of data of the #LHC experiments, the Worldwide LHC Computing Grid (WLCG) has significantly marked the landscape of distributed computing.
Find out more: home.cern/news/news/co...
December 16, 2025 at 11:00 AM
Celebrating two decades of global scientific computing
Developed to handle the vast amounts of data of the #LHC experiments, the Worldwide LHC Computing Grid (WLCG) has significantly marked the landscape of distributed computing.
Find out more: home.cern/news/news/co...
Developed to handle the vast amounts of data of the #LHC experiments, the Worldwide LHC Computing Grid (WLCG) has significantly marked the landscape of distributed computing.
Find out more: home.cern/news/news/co...
Looking for a fun activity to do over the holiday season? 🔎
From public events and science shows to hands-on experiments, interactive physics demonstrations, and exhibitions, CERN Science Gateway has something for everyone, from age five and up.
Plan your visit: visit.cern/
From public events and science shows to hands-on experiments, interactive physics demonstrations, and exhibitions, CERN Science Gateway has something for everyone, from age five and up.
Plan your visit: visit.cern/
December 16, 2025 at 9:34 AM
Looking for a fun activity to do over the holiday season? 🔎
From public events and science shows to hands-on experiments, interactive physics demonstrations, and exhibitions, CERN Science Gateway has something for everyone, from age five and up.
Plan your visit: visit.cern/
From public events and science shows to hands-on experiments, interactive physics demonstrations, and exhibitions, CERN Science Gateway has something for everyone, from age five and up.
Plan your visit: visit.cern/
📣 Pre-registration for Beamline for Schools (#BL4S) is open.
Beamline for Schools (#BL4S) is a #physics competition open to high-school students from all over the world.
Beamline for Schools (#BL4S) is a #physics competition open to high-school students from all over the world.
December 16, 2025 at 7:33 AM
📣 Pre-registration for Beamline for Schools (#BL4S) is open.
Beamline for Schools (#BL4S) is a #physics competition open to high-school students from all over the world.
Beamline for Schools (#BL4S) is a #physics competition open to high-school students from all over the world.
The 3000°C Test 🌡️
To endure the increased beam intensities and stored energies of CERN's next hadron collider, the High-Luminosity #LHC, the beam dump system - an essential part of the accelerator's machine protection systems - must be upgraded.
To endure the increased beam intensities and stored energies of CERN's next hadron collider, the High-Luminosity #LHC, the beam dump system - an essential part of the accelerator's machine protection systems - must be upgraded.
December 15, 2025 at 11:02 AM
The 3000°C Test 🌡️
To endure the increased beam intensities and stored energies of CERN's next hadron collider, the High-Luminosity #LHC, the beam dump system - an essential part of the accelerator's machine protection systems - must be upgraded.
To endure the increased beam intensities and stored energies of CERN's next hadron collider, the High-Luminosity #LHC, the beam dump system - an essential part of the accelerator's machine protection systems - must be upgraded.
Here we see BioDynaMo, the Biology Dynamics Modeller, an open-source, agent-based simulation software originally designed to model the behaviour of billions of cells. These visuals demonstrate how BioDynaMo can be used to study biological processes at scale.
December 15, 2025 at 9:37 AM
Here we see BioDynaMo, the Biology Dynamics Modeller, an open-source, agent-based simulation software originally designed to model the behaviour of billions of cells. These visuals demonstrate how BioDynaMo can be used to study biological processes at scale.
The first coherent spin spectroscopy on a single antiproton performed by the BASE collaboration #AtCERN is recognised as one of the 2025 Top 10 Breakthroughs of the Year by @physicsworld.bsky.social.
December 12, 2025 at 2:36 PM
The first coherent spin spectroscopy on a single antiproton performed by the BASE collaboration #AtCERN is recognised as one of the 2025 Top 10 Breakthroughs of the Year by @physicsworld.bsky.social.
The European Strategy for Particle Physics reaches an important milestone
At its 225th session, the #CERN Council received the recommendations for the update of the European Strategy for Particle Physics.
Read more: home.cern/news/press-r...
At its 225th session, the #CERN Council received the recommendations for the update of the European Strategy for Particle Physics.
Read more: home.cern/news/press-r...
December 12, 2025 at 2:27 PM
The European Strategy for Particle Physics reaches an important milestone
At its 225th session, the #CERN Council received the recommendations for the update of the European Strategy for Particle Physics.
Read more: home.cern/news/press-r...
At its 225th session, the #CERN Council received the recommendations for the update of the European Strategy for Particle Physics.
Read more: home.cern/news/press-r...
This #ThrowbackThursday we feature a set of event displays from 1987, recorded by the NA35 experiment.
NA35 was a particle physics experiment #AtCERN, using particle beams from the SPS.
It studied relativistic nucleus–nucleus collisions to search for evidence of new forms of quark matter.
NA35 was a particle physics experiment #AtCERN, using particle beams from the SPS.
It studied relativistic nucleus–nucleus collisions to search for evidence of new forms of quark matter.
December 11, 2025 at 8:00 AM
This #ThrowbackThursday we feature a set of event displays from 1987, recorded by the NA35 experiment.
NA35 was a particle physics experiment #AtCERN, using particle beams from the SPS.
It studied relativistic nucleus–nucleus collisions to search for evidence of new forms of quark matter.
NA35 was a particle physics experiment #AtCERN, using particle beams from the SPS.
It studied relativistic nucleus–nucleus collisions to search for evidence of new forms of quark matter.
ALICE solves mystery of light-nuclei survival
Observations of the formation of light-nuclei from high-energy collisions may help in the hunt for #DarkMatter.
Read more: home.cern/news/news/ex...
Observations of the formation of light-nuclei from high-energy collisions may help in the hunt for #DarkMatter.
Read more: home.cern/news/news/ex...
December 10, 2025 at 4:22 PM
ALICE solves mystery of light-nuclei survival
Observations of the formation of light-nuclei from high-energy collisions may help in the hunt for #DarkMatter.
Read more: home.cern/news/news/ex...
Observations of the formation of light-nuclei from high-energy collisions may help in the hunt for #DarkMatter.
Read more: home.cern/news/news/ex...
LHC delivers a record number of particle collisions in 2025 💫
*cue the holiday music* 🎄
After a few final laps around the ring, the beams of the Large Hadron Collider were paused at 6.00 a.m. on Monday, 8 December for the usual year-end technical stop.
*cue the holiday music* 🎄
After a few final laps around the ring, the beams of the Large Hadron Collider were paused at 6.00 a.m. on Monday, 8 December for the usual year-end technical stop.
December 10, 2025 at 2:12 PM
LHC delivers a record number of particle collisions in 2025 💫
*cue the holiday music* 🎄
After a few final laps around the ring, the beams of the Large Hadron Collider were paused at 6.00 a.m. on Monday, 8 December for the usual year-end technical stop.
*cue the holiday music* 🎄
After a few final laps around the ring, the beams of the Large Hadron Collider were paused at 6.00 a.m. on Monday, 8 December for the usual year-end technical stop.
Today, CERN’s #PhotoOfTheWeek features a series of images captured by Joan Torrijos during the 2025 CERN Photowalk competition, held earlier this year. #PhysPics25
Which one is your favourite? Let us know below. 👇
Image size has been adjusted to fit platform requirements.
Which one is your favourite? Let us know below. 👇
Image size has been adjusted to fit platform requirements.
December 10, 2025 at 8:40 AM
Today, CERN’s #PhotoOfTheWeek features a series of images captured by Joan Torrijos during the 2025 CERN Photowalk competition, held earlier this year. #PhysPics25
Which one is your favourite? Let us know below. 👇
Image size has been adjusted to fit platform requirements.
Which one is your favourite? Let us know below. 👇
Image size has been adjusted to fit platform requirements.
Here we see the CERN-MEDICIS (Medical Isotopes Collected from ISOLDE) facility.
The facility is designed to produce radioisotopes with the right properties to enhance the precision of patient imaging and treatment, and to improve the success of cancer treatment.
The facility is designed to produce radioisotopes with the right properties to enhance the precision of patient imaging and treatment, and to improve the success of cancer treatment.
December 8, 2025 at 8:07 AM
Here we see the CERN-MEDICIS (Medical Isotopes Collected from ISOLDE) facility.
The facility is designed to produce radioisotopes with the right properties to enhance the precision of patient imaging and treatment, and to improve the success of cancer treatment.
The facility is designed to produce radioisotopes with the right properties to enhance the precision of patient imaging and treatment, and to improve the success of cancer treatment.
This week, we #ThrowbackThursday to last week’s Cité des Métiers – Geneva’s annual fair for professions and training – where CERN was the guest of honor of this year’s edition.
#FunFact: CERN’s stand was designed with students from @IPAC Design Geneva.
#FunFact: CERN’s stand was designed with students from @IPAC Design Geneva.
December 4, 2025 at 9:17 AM
This week, we #ThrowbackThursday to last week’s Cité des Métiers – Geneva’s annual fair for professions and training – where CERN was the guest of honor of this year’s edition.
#FunFact: CERN’s stand was designed with students from @IPAC Design Geneva.
#FunFact: CERN’s stand was designed with students from @IPAC Design Geneva.
Deciphering the heavyweights of the tetraquark world
The @cmsexperiment.bsky.social reports the first measurement of the quantum properties of a family of tetraquarks that was recently discovered at the LHC
Find out more: home.cern/news/news/ph...
The @cmsexperiment.bsky.social reports the first measurement of the quantum properties of a family of tetraquarks that was recently discovered at the LHC
Find out more: home.cern/news/news/ph...
December 3, 2025 at 5:33 PM
Deciphering the heavyweights of the tetraquark world
The @cmsexperiment.bsky.social reports the first measurement of the quantum properties of a family of tetraquarks that was recently discovered at the LHC
Find out more: home.cern/news/news/ph...
The @cmsexperiment.bsky.social reports the first measurement of the quantum properties of a family of tetraquarks that was recently discovered at the LHC
Find out more: home.cern/news/news/ph...
FameLab takes centre stage at CERN 🎤
This #PhotoOfTheWeek captures the highlights from last week's FameLab final, held at the #CERNScienceGateway.
This #PhotoOfTheWeek captures the highlights from last week's FameLab final, held at the #CERNScienceGateway.
December 3, 2025 at 9:00 AM
FameLab takes centre stage at CERN 🎤
This #PhotoOfTheWeek captures the highlights from last week's FameLab final, held at the #CERNScienceGateway.
This #PhotoOfTheWeek captures the highlights from last week's FameLab final, held at the #CERNScienceGateway.
Here we see the delivery of warm helium compressors for the High-Luminosity Large Hadron Collider, the successor to CERN's Large Hadron Collider.
December 1, 2025 at 8:01 AM
Here we see the delivery of warm helium compressors for the High-Luminosity Large Hadron Collider, the successor to CERN's Large Hadron Collider.