Stephen Hawking’s phenomenal multimillion-copy bestseller A Brief History of Time introduced the ideas of this brilliant theoretical physicist to people all over the world. Now in a major publishing event Hawking returns with a sequel that unravels the mysteries of the major breakthroughs that have occurred in the years since the release of his acclaimed first book.The Universe in a NutshellQuantum mechanicsM-theoryGeneral relativity11-dimensional supergravity10-dimensional membranesSuperstrings