This book is a gentle introduction for all those wishing to learn about modern views of the cosmos Our universe originated in a great explosion
- the big bang For nearly a century cosmologists have studied the aftermath of this explosion how the universe expanded & cooled down & how galaxies were gradually assembled by gravity The nature of the bang itself has come into focus only relatively recently It is the subject of the theory of cosmic inflation which was developed in the last few decades & has led to a radically new global view of the universe Students & other interested readers will find here a non-technical but conceptually rigorous account of modern cosmological ideas
- describing what we know & how we know it One of the book's central themes is the scientific quest to find answers to the ultimate cosmic questions Is the universe finite or infinite? Has it existed forever? If not when & how did it come into being? Will it ever end? The book is based on the undergraduate course taught by Alex Vilenkin at Tufts University It assumes no prior knowledge of physics or mathematics beyond elementary high school math The necessary physics background is introduced as it is required Each chapter
Includes:: a list of questions & exercises of varying degree of difficulty