Quantum foam

One theory of empty space is that it isn’t empty at all — it’s a seething and bubbling cauldron of matter and antimatter particles springing into existence before disappearing back into nothingness. Scientists call this complicated state of affairs quantum foam. U.S. CMS Education and Outreach Coordinator Don Lincoln discusses this idea and sketches some of the experiments that have convinced scientists that this mind-bending prediction is actually true. View the video. Video: Fermilab