From an extraordinary calendar built into the landscape of Peru to the beaches of Costa Rica, Brian Cox explores the cycles of time which define our experience of life on Earth to better understand the vast expanse of cosmic time.

Brian Cox goes in search of humanity's very essence to answer the question: what are we made of? His journey begins on Earth, but the answer lies elsewhere as we discover that human origins are intertwined with the lifecycle of the stars.

Gravity is a force that seems so familiar, yet it sculpts the entire universe. Examine how this strange and surprising force affects the immediate world around us and also serves as the great orchestrator of the cosmos.

Travel with Brian Cox from the fossils of the Burgess Shale to the sands of the oldest desert in the world to see how light holds the key to our understanding of the whole universe, including our own deepest origins.