Wonders of the Universe

Brian Cox seeks to understand the nature of time. From an extraordinary calendar built into the landscape of Peru to the beaches of Costa Rica, Brian explores the cycles of time which define our experience of life on Earth. But as the Earth orbits the Sun, the Solar system orbits the entire Milky Way Galaxy in a cycle that takes a staggering 250 million years to complete.

In the last episode of Professor Brian Cox's epic journey across the universe, he travels from the fossils of the Burgess Shale to the sands of the oldest desert in the world to show how light holds the key to our understanding of the whole universe, including our own deepest origins. But first we need to understand the peculiar properties of light itself.