Joseph Silk is a professor at Oxford University. He has written six popular books on cosmology, including The Big Bang, A Short History of the Universe, and The Infinite Cosmos. His research specialties include dark matter, the formation of the galaxies, and the big bang theory. He previously taught at the University of California at Berkeley. He has received numerous awards, including the Gold Medal of the Royal Astronomical Society, and honorary degrees from the University of Rome and the Ecole National Superieur of Lyon. He is an honorary member of the French Physical Society and is a fellow of the Royal Society, the Institute of Physics, the American Academy of Arts and Sciences, the American Association for the Advancement of Science, and the American Physical Society.