This book is the perfect guide to the most important and, of course, the most fascinating questions of modern physics: are time travel possible?, are there parallel universes? If the universe expands, where does it expand? What happens if, having accelerated to the speed of light, look at yourself in the mirror? Why do we need particle colliders, and why should they work all the time? Don't they repeat the same experiments endlessly? Humor, paradox, fascination and accessibility of presentation put this book on the same shelf as the best-selling books of J. Perelman, S. Hawking, B. Bryson and B. Green.