You are now reading the word "now" - and it has already passed. The fleeting nature of the present has posed the greatest riddles to philosophers and physicists: What is time? And why does it flow? Generations of scientists have struggled in vain for answers, with some giving up. Not Richard A. Muller. He has developed a theory of time that is new and experimentally verifiable. To present it, he first skillfully explains fundamental physical concepts such as relativity, entropy, entanglement, antimatter, and the Big Bang. Building on this foundation, he unfolds his provocatively new perspective with all its implications for philosophy or the question of free will. A powerful and convincing vision for solving the ancient riddle of time. Muller offers a remarkably fresh and exciting approach to explaining time.