Explore the evolution of the Universe in this demo-packed lecture by renowned cosmologist Brian Keating. Delve into early models of the universe's origin, including Newton and Einstein's contributions, and learn about Lemaitre's Big Bang theory. Examine the four pillars of the Big Bang Theory and its potential problems. Discover the cosmic microwave background radiation and explore alternatives to the singular Big Bang, including the inflationary multiverse theory. Understand the double slit experiment and how polarisation can disprove other theories. Learn about B-mode polarisation and its significance in cosmology. Hear about the Simons Observatory and future experiments, as well as the challenges of the multiverse theory. Gain insights into the importance of experimental science, drawing inspiration from Michael Faraday's work.