John R. Gribbin (born 19 March 1946) is a British science writer, an astrophysicist, and a visiting fellow in astronomy at the University of Sussex. The topical range of his prolific writings include quantum physics, human evolution, climate change, global warming, the origins of the universe, and biographies of famous scientists. He also writes science fiction. In 1984, Gribbin published In Search of Schrödinger's Cat: Quantum Physics and Reality, the book that he is best known for, which continues to sell well even after years of publication. At the 2009 World Conference of Science Journalists, the Association of British Science Writers presented Gribbin with their Lifetime Achievement award.
The Birth of Time: How We Measured the Age of the Universe