Though some people consider UFOs to be purely science fiction, others keep an open mind. Alien visitations, government conspiracies, and optical illusions are just three of the possible explanations for UFOs. Readers of this book will decide which side they are on. They can examine UFO photographs, learn more about famous sightings, and create their own theories.
ThriftBooks sells millions of used books at the lowest everyday prices. We personally assess every book's quality and offer rare, out-of-print treasures. We deliver the joy of reading in recyclable packaging with free standard shipping on US orders over $15. ThriftBooks.com. Read more. Spend less.