The Neutrino Story: One Tiny Particle’s Grand Role in the Cosmos Every second of every day we are exposed to billions of neutrinos emitted by the Sun and yet they seem to pass straight through us with no apparent effect at all. Tiny and weakly interacting this subatomic particle may be but this book will show you just how crucial a role it has played in the evolution of the elements in the universe and eventually ourselves. We first start with an introduction to the basics of subatomic physics including brief backgrounds on the discoveries that set the stage for major 20th century advances. The author a distinguished theoretical physicist who has researched neutrinos for over thirty years next explains in nontechnical language how and why the neutrino fits into the wider story of elementary particles. Finally the reader will learn about the latest discoveries in the past half century of neutrino studies. This semi popular science book will appeal to any physics students or non specialist physicists who wish to know more about the neutrino and its role in the evolution of our universe. 1 Introduction 2 Particles as building blocks of matter 3 From protons and neutrons to a zoo of particles 4 Order in the zoo and quarks 5 Forces that keep the universe together 6 Forces are also caused by particles 7 Neutrino is born as an idea 8 From idea to reality: neutrino story unfolds in slow motion 9 Neutrino discovered 10 Standard model of the particles and forces 11 Forces in the standard model and symmetries 12 More physics beyond the standard model or end of physics now 13 Neutrinos Oscillate and hence they weigh 14 What have we learnt about neutrinos from neutrino oscillation experiments 15 Mendeleev’s periodic table 16 A brief overview of the Big Bang Theory of the Universe 17 Inflationary universe 18 From quarks to protons and neutrons and then to helium and beryllium and the dance of atoms 19 Stars as the cooking pots for heavy nuclei 20 Neutrino mass hints at mirror symmetry in Nature 21 Mirror symmetric weak force and neutrino mass 22 Hints of other new physics from neutrino mass 23 Origin of matter and neutrinos 24 Dark universe 25 Neutrinos from Heavenly sources 26 Anthropic principle 27 What lies ahead in the future Epilogue Glossary.