To mark the fiftieth anniversary of the launch of Sputnik, The New Atlantis revisits Hannah Arendt’s classic 1963 essay about modern science and the human meaning of our forays into space — five commentators respond to her argument and discuss its relevance today; "Americans will not like it": Michael Griffin on the global space economy; a review of Red Moon Rising: Sputnik and the Hidden Rivalries that Ignited the Space Age by Matthew Brzezinski; and a review of Rocketeers: How a Visionary Band of Business Leaders, Engineers, and Pilots Is Boldly Privatizing Space by Michael Belfiore. A review of Von Braun: Dreamer of Space, Engineer of War by Michael J. Neufeld.