Military advantage, scientific knowledge, and commerce have thus far been the main motives to human exploration of outer space. explores what may be the best motive of all, largely untapped: the desire of every human being, essentially spiritual, to understand more about our place in the universe, how our lives on Earth are inextricably part of that bigger picture. Drawing on leading scientists, religious thinkers, and science fiction writers—including a new interview with John Glenn, and an essay by Director of the Vatican Observatory Guy Consolmagno, SJ—Paul Levinson and Michael Waltemathe have assembled a volume that puts space travel and religion on the map for anyone interested in outer space, theology, and philosophy.