A book that much to me. I have a small level in physics, and for me the notion of space-time was quite blurred, if not incomprehensible. There, we understand why the "real time" does not exist, why a straight is not really. The geometry of Euclid and Newton's theories were completely redesigned by Einstein. How his theories have led our knowledge of the universe. This book seemed complicated at first glance, appears exciting to read.