"This third book by the Aerospace Technology Working Group (ATWG) is a broad and fascinating survey of the important topic of Space Commerce. The authors are genuine experts within their fields, and many of them have been together in the loose collaboration of the ATWG for two decades. They share a common impatience with incremental development and bureaucracy, and will lead the reader in exploring the frontier of this emerging business venue." Bruce McCandless II, 24-Year NASA Astronaut