If we could build a particle collider so large that it stretches around the moon, what physics could we uncover? James Beacham takes us on a tour of particle physics. Subscribe for regular science videos: http://bit.ly/RiSubscRibe --- We want to thank our Patreon supporters who help us bring you videos like this: Alan Delos Santos, Ashok Bommisetti, Lester Su, Rebecca Pan and Will Knott. --- The Large Hadron Collider switched on in 2015 at the highest energy ever, re-creating the conditions of the universe as they were just a fraction of a second after the Big Bang, and what physicists are learning so far is that our universe seems to be … extremely odd. But to know exactly how odd it is we need to build a bigger collider, to get even closer to the moment of the Big Bang. How big do we need to go? Join particle physicist James Beacham as he explores what we would likely learn from a hadron collider around the moon, such as whether we live in a multiverse — and what this means for society. James Beacham is a post-doctoral researcher with The Ohio State University, based full-time at CERN, where he is a member of the ATLAS Experiment collaboration, one of the two teams that discovered the Higgs boson in 2012. His research focuses on finding explanations for some of the key unsolved mysteries of the universe, like determining what dark matter is, whether the Higgs boson is standard or not-so-standard, why gravity is so weak compared to the other forces of nature, and whether there are hidden, dark sector forces out there that we've yet to uncover in collider experiments. This talk and Q&A was filmed at the Ri on 27 March 2018. Watch the Q&A: https://youtu.be/tYBv_Vk8WkU --- Support us on Patreon: https://www.patreon.com/TheRoyalInstitution The Ri is on Twitter: http://twitter.com/ri_science and Facebook: http://www.facebook.com/royalinstitution and Tumblr: http://ri-science.tumblr.com/ Our editorial policy: http://www.rigb.org/home/e