From ATLASexperiment https://twitter.com/ATLASexperiment on Twitter: Today marks the last day of proton-proton collisions for Run 2 of the LHC! In total, ATLAS has recorded 149 fb-1 of data at 13 TeV a huge dataset for physicists to study the Standard Model and probe for hidden signatures. https://twitter.com/ATLASexperiment/status/1055027625842929665/photo/1 https://chirp.cooleysekula.net/attachment/52324