America’s Space Futures is an important contribution to the ongoing debate about space policy, the American space program, and the human destiny in space. It lays out alternative paradigms and frameworks for assessing America’s future in space and how different visions would require changes to America’s current approach to space development and exploration. Since the end of the Apollo program in the 1970s, the U.S. civil space program has accomplished a great number of things: from deployi...