Starting with the moment of the Big Bang—at exactly one ten-millionth of a trillionth of a trillionth of a trillionth of a second—Charles Liu charts a history of space and time all the way through the evolution of our solar system, the birth of stars, and the formation of life on Earth, to the future of our galaxy. Included here are biographies of some of the most important scientists of the past century, plus accessible definitions for such terms as Planck Time, M Theory, Higgs bosons, and nucleosynthesis.