This book is an account of the fundamental scientific picture of the world in its development from the more visual to the more abstract: from a thrown stone to an explanation of the equations of Einstein and Schrödinger. A person understands the structure of the Universe by observing motion and its consequences, guessing at the rules that govern everything that happens, and receiving hints about hidden parts of the world or new rules from discrepancies between the theoretically expected and the actual motion: famous examples include the predicted existence of Neptune, Planet 9, and invisible matter in galaxies, the reasons for the accelerated expansion of the Universe, and the quantum nature of thermal radiation. The book discusses the functioning of the Solar System and the possibilities of travel in it; the relationships between space, time, and motion in the special theory of relativity and the problems of galactic travel they determine; the general theory of relativity and its effects, including non-Keplerian orbits, time dilation, gravitational waves, and exotic methods of superluminal travel; entropy as ignorance about microscopic motion and its applications from heat engines to Maxwell's demon and black holes; quantum mechanics, including walking through walls, the unique structure of atoms, entanglement, and interpretations designed to clarify the state of Schrödinger's cat. According to the rules of our universe, there can be no peace, and the reader must appreciate its restless diversity.