This full-colour introduction to the universe covers everything from the very first seconds of its existence to the possible end of everything. The story began 13.8 billion years ago; our discovery of the universe started more recently. Unlike other types of scientific enquiry, cosmology is not an experimental science. It is largely theoretical, with the few experiments that are possible being designed to test out the theory. Our discovery of the history of the universe is largely a triumph of mathematics and philosophy, more recently know as theoretical physics. This book is two stories in one: the narrative of the universe itself, from the Big Bang to the present day, alongside the story of how scientists and mathematicians uncovered its history.