Weighing the Universe

Posted on Apr 17, 2020 in Gresham College, Outreach, Public lecture, Science, universe

A public lecture given on Nov 4th 2019 as Visiting Professor of Cosmology at Gresham College, London. Part of a three lecture series in 2019-2020 on “The Nature of Reality”. Surely you can’t “weigh” the Universe?!  Let us begin by clarifying the title of this lecture: “weighing” is not quite the right word. In fact, […]

100 seconds physics

Posted on Sep 17, 2013 in Outreach

Physics World is asking scientists to take a complex idea and explain it in 100 seconds or less using only a white board. Here is my take! What is the anthropic principle?  How do we know that the Universe is flat?