Flat and Curved Space-Times

'' G.Ellis and R. Williams two seasoned and wellknown Relativists, have done a super job in suceeding to present ' just the facts' and at the same time make their book a pleasure to read, even for motivated, non-experts'' -European Astronomical Society NewsletterMany people know that Einstein invented the theory of relativity, but only few have more than a superficial idea of its content. This book aims to explain the basic features of relativity in detail, emphasising the geometrical aspects by using a large number of diagrams, and assuming no knowledge of higher level mathematics.