What's the difference between me, a planet and a star? Does the Universe follow a recipe? If a wardrobe has three dimensions, what is the fourth? These are some of life's biggest questions, and you are a daring thinker for even thinking about them! So open your mind and prepare to explore some of the biggest, boldest ideas about astrophysics, space and time - from the ridiculously silly to the strikingly serious. Each question in Really Big Questions For Daring Thinkers: Space and Time will unlock new ways of thinking and may lead you to some intriguing answers. If you're daring enough to take on this mind-expanding challenge, then read on! Written by science communicator and space expert Professor Mark Brake, the easy-to-understand text, intriguing mind-teasers, and incredible thought experiments make this philosophic journey unforgettably fun!.