Secrets of the Universe: How We Discovered the Cosmos

For millennia, humans have looked to the celestial sphere to explain the cosmos,first recording the movements of the Moon 25,000 years ago. Since the Enlightenmentand the dawn of the space age, scientists have been unravelling cosmic mysteries, andraising astonishing new questions for future generations to answer. Today we live inan age of unprecedented astronomical revelation, from the discovery of water on Marsto the detection of gravitational waves and the first photograph of a black hole.