Time is one of the great mysteries of the universe. In this fascinating volume, NASA astronomer and educator Sten Odenwald brings to life the philosophical and scientific conundrums about time in simple and accessible language. This hardback edition includes foil cover accents and full-colour diagrams, making it a wonderful gift for those who wish to learn more about time. Covering subjects such as relativity, the arrow of time, entropy, Einstein''s idea of the block universe, and the A and B theories of time, The Essential Book of Time provides the perfect starting point for anyone interested in the subject.ABOUT THE SERIES: Concepts is a series of titles diving into some of the most compelling subjects in modern science. Written by a variety of experts, these beautifully illustrated foil-stamped hardbacks provide a perfect starting point to a range of fascinating topics.