Following his bestselling Abduction, Pulitzer winner & Harvard professor John E. Mack, M.D. demonstrates how alien abduction phenomena demand a new way of examining the nature of reality & our place in the cosmos. Mack shook the world when he published in Abduction the results of his research involving clients who reported they'd had encounters with alien life-forms. In Passport to the Cosmos, Mack, who has done additional research with abductees in the USA & around the world, asserts that this phenomenon is part of a new era in consciousness, a time in which we must be willing to embrace the idea that alien visitation is real on some level. The alien abduction phenomenon is a cosmic wake-up call that we live in a world filled with spirits & beings who can cross the barrier we've made between the material & immaterial worlds. Drawing on traditiona of non-Western & indigenous cultures, which more readily accept a multidimensional cosmos, he shows that by broadening definitions of what is real we can begin to explore a phenomenon that has deep & lasting implications. By sharing the encounters of experiencers, he illuminates a phenomenon that's changed the worldviews of those who've experienced it. Time & again, experiencers from all cultures say their lives have been altered by their encounters with aliens in ways both traumatic & transformative. This transformation seems to be an intrinsic part of the phenomenon, which is marked by a variety of elements that go beyond the physical manifestation of alien visitation. Passport to the Cosmos solidifies his reputation as an authoritative pioneer of the science of human experience.