Given that it includes literally everything in existence, it’s not surprising that the Universe is the source of some of the greatest mysteries in physics. How big is it? How did it begin? And, perhaps more worryingly, how will it end? Through cosmology, the study of the evolution and structure of the Universe, experts have been attempting to untangle these tricky topics for centuries. They have found the faint traces of the Big Bang and shown that our Universe is expanding at a phenomenal rate. However, while their efforts have forged our core understanding of physics and earned them a number of Nobel Prizes, there is much that eludes us still. Explore the secrets of the cosmos with astronomer Dr Greg Brown as he entertains our fascination with impossible questions in this pocket guide to everything that ever was and ever will be.