It all began when everything was in the same place. We don't know how it know how it appeared, but we do know that the Universe started in a very small space. It seems impossible, but it's true: when it all began, all the big things were very little. IMPOSSIBLE tells us the Universe's history since the Big Bang to the birth of plants, animals and humans. Catarina Sobral's first non-fiction book is a colourful journey through particles, stars, dinosaurs and our genealogical tree.