By combining the expertise of both a leading experimentalist and foremost theorist, this book includes important aspects of both observational cosmology as well as more theoretical concepts. The inclusion of worked examples, end of chapter summaries, and problems (with answers) in each chapter make this book an excellent introduction to particle astrophysics for undergraduate students. Undergraduate and postgraduate students of astronomy, astrophysics, cosmology, particle physics, theoretical physics and mathematical physics, and those carrying out research in these fields.