Ultra-high vacuum is ten trillion times less dense than the Earth's atmosphere. Discover the challenges that we have to overcome to create and maintain this low density of matter, a little piece of interstellar space right under your feet.

Virtual-reality headsets will offer visitors the chance to see the LHC accelerator, a detector and the Data Centre up close.

Virtual-reality headsets will offer visitors the chance to see the LHC accelerator, a detector and the Data Centre up close.

Virtual-reality headsets will offer visitors the chance to see the LHC accelerator, a detector and the Data Centre up close.

Go on a virtual trip into the CERN Data Centre and the CMS experiment, and enjoy an interactive virtual reality tour of point 1 and the ATLAS Cavern while participating in a study on virtual reality for CERN Outreach.