fraction of a second after the Big Bang, when the amount of symmetry in the universe was thought to have changed abruptly by a process known as symmetry breaking. This chapter also brings into play the theory of grand unification and entropy is also revisited. Chapter 10, "Deconstructing the Bang", makes inflationary cosmology the main point. General relativity and the discovery of dark energy (repulsive gravity) are taken into account, as well as the cosmological constant. Certain problems that arise due to the standard Big Bang theory are addressed, and new answers are given using inflationary cosmology. Such problems include the horizon problem and the flatness problem. Matter distribution throughout the cosmos is also discussed, including the concepts of dark matter and dark energy. Chapter 11, "Quanta in the Sky with Diamonds", continues with the topic of inflation, and the arrow of time is also discussed again. The chapter addresses three main developments: the formation of structures such as galaxies, the amount of energy required to spawn the universe we now see, and the origin of time's arrow. Part IV: Origins and Unification Part IV deals with new theoretical aspects of physics, particularly in the author's field. Chapter 12, "The World on a String", informs the reader of the structure of the fabric of space according to string theory. New concepts are introduced, including the Planck length and the Planck time, and ideas from The Elegant Universe are revisited. The reader will learn how string theory could fill the gaps between general relativity and quantum mechanics. Chapter 13, "The Universe on a Brane", expands on ideas from chapter 12, particularly on M-theory, of which string theory is a branch. This chapter is devoted to speculations on space and time. The insights of a number of physicists, including Edward Witten and Paul Dirac, are presented. The focus of the chapter becomes gravity and its involvement with extra dimensions. Near the end of the chapter, a brief section is devoted to the cyclic model. Part V: Reality and Imagination Part V deals with many theoretical concepts, including space and time travel. Chapter 14, "Up in the Heavens and Down on the Earth", is about various experiments with space and time. Previous theories are brought back from previous chapters, such as Higgs theory, supersymmetry, and string theory. Future planned experiments are described in an attempt to verify many of the theoretical concepts discussed,