Are there extraterrestrials among us? Discover a host of stunning secrets—and an ingenious brain challenge that will light up your world! The year is 1969, and Professor Alan Grey is ready to lead you on a magical mystery tour of a world where space creatures mingle with earthlings, unbeknownst to all but a chosen few. On the one hand, this dazzling book is a field guide to other worlds, from the solar system to the laws of time and space; from the many species and cultures in faraway galaxies to the primitive state of alienology studies here on Earth. To the sharpest readers, however, this shining resource, with its constellation of brain-teasers, serves as a cunning test: Readers who solve its puzzles are guaranteed to achieve enlightenment—and have a chance to represent humankind in the intergalactic community at large. Here are just some of the topics covered: *A map of the universe, showing the location of many alien worlds an alien species guide *Alien biology, methods of communication, and civilizations *Alien technology and spaceship design *How to identify aliens who have already infiltrated human society and more!