Is there life in space? Within the solar system, which we can reach and are now beginning to explore, the answer may be: Nothing but spores and bacteria. Perhap

This book takes the reader on a journey through the history of extremely ambitious, large and complex space missions that never happened. What were the dreams a

In the summer of 1975, NASA brought together a team of physicists, engineers, and space scientists--along with architects, urban planners, and artists--to desig

In 1969, Princeton physicist Gerard O'Neill began looking outward to space colonies as the new frontier for humanity's expansion. A decade later, Eric Drexler,