Join CERN today, 28 February 2018, at 4pm (CET), when we will be live for the first time on Facebook from the Large Hadron Collider (LHC) tunnel, 100 metres underground. 

This is the last chance to go to the LHC tunnel before the CERN accelerators complex restarts soon. Our scientists will be answering your questions as well as explaining how CERN’s accelerators work and why they stop in winter, and what physicists are up to when there’s no beams and no collisions.

Find out more about what has been happening during the winter shutdown for the LHC, injectors and the experiments.

Watch the live on Facebook or below, from 4pm.