Since 2003, a LHC dipole magnet turned into a telescope has been following the Sun's movements from behind a concrete wall. This is the CAST experiment - hunting for hypothetical "axion" particles that could be produced in the centre of our star ☀️ Find out more about this experiment: https://home.cern/science/experiments/cast | CERN

#2019inreview Relive the physics and experiments highlights of the year. | CERN

The ATLAS Experiment at CERN has recently finalised the upgrading of one of the experiment’s sub-detectors, called the Small Muon Wheel (in spite of its 10m size, which is nothing but small!). In this teaser, announcing a live event featuring the detector, the new Small Muon Wheel is seen at the LHC surface hall, being finalised before being lowered 100 metres underground. Find out more: https://home.cern/news/news/cern/live-atlas-experiment | CERN

In the underground experimental caverns of the #LHC, teams have been busy with #LS2 upgrades. Let’s look at the #2021 milestones. #2021inReview | CERN

13K views · 1K reactions | After two years of accelerator upgrades, find out what happened to #CERN accelerators in #2021 in the first of our highlights videos. #2021inReview | CERN | Facebook

In #2021, results from CERN’s diverse experimental programme impressed us again. Which #physics result surprised you the most this year? #2021inReview | CERN