The book opens with his father's fond, vivid portrait of his son - a young man of extraordinary intellectual promise, who excelled at physics, math, and chess, but was also an active, good-hearted, and fun-loving kid. But the heart of the book is a description of the agonized months during which Gunther and his former wife Frances try everything in their power to halt the spread of Johnny's cancer and to make him as happy and comfortable as possible. In the last months of his life, Johnny strove hard to complete his high school studies. The scene of his graduation ceremony from Deerfield Academy is one of the most powerful - and heartbreaking - in the entire book. Johnny maintained his courage, wit and quiet friendliness up to the end of his life. He died on June 30, 1947, less than a month after graduating from Deerfield.

    Readers will find an enlightening history of the vacuum: how the efforts to make a better vacuum led to the discovery of the electron; the understanding that the vacuum is filled with fields; the ideas of Newton, Mach, and Einstein on the nature of space and time; the mysterious aether and how Einstein did away with it; and the latest ideas that the vacuum is filled with the Higgs field. The story ranges from the absolute zero of temperature and the seething vacuum of virtual particles and anti-particles that fills space, to the extreme heat and energy of the early universe. It compares the ways that substances change from gas to liquid and solid with the way that the vacuum of our universe has changed as the temperature dropped following the Big Bang. It covers modern ideas that there may be more dimensions to the void than those that we currently are aware of and even that our universe is but one in a multiverse. The Void takes us inside a field of science that may ultimately provide answers to some of cosmology's most fundamental questions: what lies outside the universe, and, if there was once nothing, then how did the universe begin?