Today, movie theaters are packed with audiences of all ages marveling to exciting science fiction blockbusters, many of which are also critically acclaimed. However, when the science fiction film genre first emerged in the 1950s, it was represented largely by exploitation horror films--lurid, culturally disreputable, and appealing to a niche audience of children and sci-fi buffs. How did the genre evolve from B-movie to blockbuster? Escape Velocity charts the historical trajectory of American science fiction cinema, explaining how the genre transitioned from eerie low-budget horror like It...