@ATLASexperiment

The ATLAS experiment at the Large Hadron Collider at @CERN. Check out @ATLASpapers for our latest scientific publications.

 CERN
linkin.bio/atlasexperiment
Joined December 2009
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Collision season begins! Over the weekend, the ATLAS Experiment recorded its first 13.6 TeV proton collisions of 2026. These event displays capture the start of the final run of the current Large Hadron Collider before its transformation to the High-Luminosity LHC (#HiLumiLHC).
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Join us for a rare look inside the ATLAS Experiment at @CERN!⚛️ Go 100 m underground with ATLAS physicists Dr Christian Appelt and Dr Despoina Sampsonidou for an exclusive Open Virtual Visit. 📅 Thurs 29 January at 5 pm CET 📍 Live on Zoom 🔗 Register: cern.ch/atlas-open-visit
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Heavy-ion season is here! 💥⁠ ⁠ The ATLAS Experiment at @CERN has recorded its first lead-lead collisions of 2025, marking the start of three weeks of heavy-ion running at 5.36 TeV per nucleon pair.⁠ Take a look at some of our first spectacular event displays!⁠
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What happens when you mix Halloween with #darkmatterday? Physics pumpkins, of course! 🎃 🎃 Grab spooky science stencils from the ATLAS Experiment at @CERN, including a special Dark Matter design! 🔗 cern.ch/stencils
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Have you explored the ATLAS #OpenData for Education platform? Access 2TB of real LHC collision data through guided tutorials and notebooks. ATLAS Open Data is designed for students, teachers and anyone curious about how physics discoveries are made! 🔗opendata.atlas.cern
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Curiosity drives discovery! 🌌 The ATLAS Experiment at @CERN brings together thousands of scientists and engineers from around the world to explore the building blocks of the Universe. 🎥 Watch our new intro video, now available in 6 languages on YouTube youtube.com/watch?v=6UqW4GEl…
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Neon collides at the LHC! ✨ The ATLAS Experiment at @CERN records its first-ever neon–neon collisions. Take a look at these striking collision event displays – then discover how neon opens up exciting new opportunities to explore the strong force! 🔗 atlas.cern/Updates/News/Firs…
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ATLAS records its first-ever oxygen-oxygen collisions at the LHC! 🎇 These collisions offer a new way to explore the quark-gluon plasma in smaller systems — bridging the gap between proton-lead and lead-lead collisions. 🔗 Learn more: atlas.cern/Updates/News/Firs…
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13 years later… still a picture-perfect moment! 📸 On 4 July 2012, ATLAS and @CMSexperiment announced the discovery of the #Higgsboson at @CERN. Today, we revisit the spots that witnessed history, because some stories are worth reliving. 🔗 Learn more: atlas.cern/Discover/Physics/…
1️⃣ François Englert and Peter Higgs at the announcement seminar

ALT 1️⃣ François Englert and Peter Higgs at the announcement seminar

2️⃣ They weren’t alone — the auditorium was completely packed

ALT 2️⃣ They weren’t alone — the auditorium was completely packed

3️⃣ Outside, the queue to get in kept growing

ALT 3️⃣ Outside, the queue to get in kept growing

4️⃣ And dozens of journalists waited for the press conference

ALT 4️⃣ And dozens of journalists waited for the press conference

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Protons and oxygen collide!💥 The ATLAS Experiment at @CERN has recorded its first-ever proton–oxygen collisions. Breathe in today's stunning event displays, then learn how these light-ion collisions can deepen our understanding of fundamental forces. ➡️ atlas.cern/Updates/News/Firs…
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