Wednesday 17 August 2016 Speaker: Chris Pearson (RAL/Space) Title: "What we don’t know about the Universe?” Abstract: What is the Universe made of ? Or more pertinently how much of the stuff contained in our Universe do we actually understand. From inflation, through the first 3 minutes, from the surface of last scattering through the cosmic dark ages to the present epoch, how has our Universe evolved and what clues can observations give us about its content and ultimately its fate.