We take a look at mysterious dark matter - and a chocolate pie. Featuring Meghan Gray, Ed Copeland and Mike Merrifield. More videos with Dr Gray: http://bit.ly/Meghan_Playlist It's an embarrassing fact that only relatively recently, we discovered that 95% of the universe is missing. Dark Energy makes up about 70% of the universe, but here we are concerned with Dark Matter which makes up about 27% of the universe. Put another way there is about 5 times as much dark matter as there is regular matter. Unfortunately we can't see it, although we are searching for it. So here we look at why we think it exists and what it might be? Featuring a chocolate pie! Visit our website at http://www.sixtysymbols.com/ We're on Facebook at http://www.facebook.com/sixtysymbols And Twitter at http://twitter.com/sixtysymbols This project features scientists from The University of Nottingham http://bit.ly/NottsPhysics Patreon: https://www.patreon.com/sixtysymbols Sixty Symbols videos by Brady Haran http://www.bradyharanblog.com Email list: http://eepurl.com/YdjL9