Astrology is not science, but science has a lot to say about it. How could a set of ideas so unmoored from reality remain popular for hundreds of years since the scientific revolution? Carlos Orsi's brisk and engaging survey helps us understand why astrology doesn't work, why people are fascinated by it anyway, and why it all matters. -- Sean Carroll, author of The Biggest Ideas in the Universe: Space, Time, and Motion How do we know that astrology is pseudoscience? Whether you dabble in it as a fun pastime or simply wonder why it is popular, youll be enlightened by reading What Science Says About Astrology. Carlos Orsi's compellingly argued book is an engaging and illuminating look at this superstition. -- Elizabeth F. Loftus, University of California Irvine Thoughtfully researched, crisply argued, and beautifully written, debunking pseudoscience shouldnt be nearly this much fun. Seventy years ago, Karl Popper gave us a promissory note for why astrology was the queen of pseudoscience. Today, Carlos Orsi has cashed it. A marvelous read. -- Lee McIntyre, author of The Scientific Attitude: Defending Science from Denial, Fraud, and Pseudoscience In this concise yet thoroughly authoritative volume, Carlos Orsi presents everything you need to know about the science of astrology. An entertaining and well-written account from its ancient beginnings to its modern forms. -- Stuart Vyse, author of Believing in Magic: The Psychology of Superstition