Antimatter Explores A Strange Mirror World, Where Particles Have Identical Yet Opposite Properties To Those That Make Up The Familiar Matter We Encounter Everyday; Where Left Becomes Right, Positive Becomes Negative; And Where, Should Matter And Antimatter Meet, The Two Annihilate In A Blinding Flash Of Energy That Makes Even Thermonuclear Explosions Look Feeble By Comparison. It Is An Idea Long Beloved Of Science-fiction Stories--but Here, Renowned Science Writer Frank Close Shows That The Reality Of Antimatter Is Even More Fascinating Than The Fiction Itself. We Know That Once, Antimatter And Matter Existed In Perfect Counterbalance, And That Antimatter Then Perpetrated A Vanishing Act On A Cosmic Scale That Remains One Of The Greatest Mysteries Of The Universe.