Traveling into space and visiting or even emigrating to nearby worlds will soon become part of the human experience. Scientists, engineers, and investors are working hard to make space tourism a reality. As experienced astronauts will tell you, extraterrestrial travel is incomparably thrilling. To make the most of the experience requires profound physical and mental adjustments by travelers as they adapt to microgravity and alterations in virtually every aspect of life, from eating to intimacy. Everyone who goes into space and returns sees Earth and life on it from a profoundly different perspective. Astronomer and former NASA/ASEE scientist Neil F. Comins has written the go-to book for anyone interested in space exploration, including potential travelers. He describes the joys and the dangers travelers will face--weightlessness, unparalleled views of Earth and the cosmos, the opportunity to walk on or jump off another world, as well as radiation, projectiles, unbreathable atmospheres, and potential equipment failures.