What's the universe made of? Where did everything come from? Lift the flaps in this fascinating book to reveal some of the amazing discoveries that astronomers and physicists have made in their quest to unlock the mysteries of the Universe. Curious young minds will be fascinated to discover planets, stars and galaxies and explore intergalactic space, with over 70 flaps to lift. Includes explanations of some of the biggest questions in the universe, including 'What happened during the Big Bang?' and 'What lies out in the far reaches of space?