In his groundbreaking follow-up to the bestselling Abduction, Pulitzer Prize-winner John E. Mack powerfully demonstrates how the alien abduction phenomenon calls for a revolutionary new way of examining the nature of reality and our place in the cosmos. Harvard professor Mack stunned the world when he published the astonishing results of his extensive research involving clients who claimed they had had encounters with alien life-forms. Writing with the authority and insight that have marked his distinguished career as a psychiatrist and writer, Mack used the remarkable stories to show how the abduction phenomenon has the vast potential to transform the foundation of human thought. In Passport to the Cosmos, Mack, who has done additional research with abductees in the United States and around the world, provocatively asserts that this phenomenon is part of a new age in human consciousness, a time in which we must be willing to embrace the idea that alien visitation is real on some level. Drawing on the rich tradition of non-Western and indigenous cultures, which are more accepting of the idea that we live in a multidimensional universe, Mack persuasively shows that by broadening our definition of "what is real" we can begin to explore a phenomenon that has deep and lasting implications for humanity. In Passport to the Cosmos, John Mack further solidifies his reputation as a brave pioneer on the forefront of the science of human experience with an authoritative voice that takes us into the twenty-first century.