Faster than the speed of light. The story of a scientific specula

Say the word "light" in the context of physics, and most of us repeat the mantra: nothing travels faster than the speed of light. Indeed, nothing does. But light is thought to have another amazing property, which Einstein enshrined in his Theory of Special Relativity: light travels at one speed and one speed only - it is one of nature´s constants. This idea is considered sacred; it is one of the foundations of modern physics. But what if it´s wrong?In this text, Joao Magueijo puts forth the speculation that light travelled faster in the early universe than it does today. As Magueijo claims in this book, his theory of the varying speed of light (VSL) solves some of the most intractable problems in cosmology - specifically the flatness problem, the horizon problem, and the energy of space itself. In addition, the VSL theory could have implications for faster space travel, black holes, time dilation and string theory.