CMS Experiment CERN on X: "We have the first high-energy collisions with stable beams in 2025! The LHC has started back up to continue Run 3 after the winter break - and the first collisions at 13.6 TeV have just happened! Here is a beautiful event display showing one of these first collisions. @CERN https://t.co/PsAUeBrm8t" / X