What is the nature of space and time? How do we fit within the universe? How does the universe fit within us? Was there a beginning of time? Could time run backwards? Is the universe infinite or does it have boundaries? There’s no better guide through these mind-expanding questions than acclaimed theoretical physicist and best-selling author Balungi Francis.The book begins by reviewing the great theories of the cosmos from Planck to Einstein, before delving into the secrets which still lie at the heart of space and time, from the Big Bang to black holes, via spiral galaxies. This new edition includes recent updates from Balungi with his latest thoughts about the black hole mass limit and the origin of gravity.This wonderful and exciting book is optimal for physics graduate students and researchers. Not since Stephen Hawking's celebrated best-seller Brief History of Time has physics been so vividly, intelligently and entertainingly revealed.