THE MISSION

The inner workings of NASA through an enthusiastic account of an interplanetary probe to a distant moon.

Although space travel hasn’t enraptured the U.S. since the 1969 Apollo moon landing, NASA continues to accomplish great feats, and more are in the offing, including this book’s subject: the 2024 launch of a multibillion-dollar spacecraft to explore Jupiter’s moon Europa. To puzzled readers, journalist and Army veteran Brown explains that the Galileo probe, which orbited Jupiter from 1995 to 2003, discovered a liquid water ocean beneath Europa’s icy surface. Life requires liquid water, and despite a torrent of probes and landers, none has turned up on Mars. No president since Lyndon Johnson has shown a genuine interest in space travel, a feeling shared by Congress with rare exceptions, including one of Brown’s unlikely heroes, a conservative from Texas. Furthermore, when Congress doles out tax money, anything involving astronauts takes priority. Even space buffs struggle to name a discovery produced by the manned space station, but robotic probes often return spectacular discoveries. Despite this, unmanned programs struggle for attention in this “astronaut-led, astronaut-centric organization,” but its scientists and engineers contain many brilliant workaholics. Brown delivers breathless biographies of a dozen as he describes their effort, now passing 20 years, to explore Europa. Since the 1990s, they have seen several proposals approved and then killed, but the Europa Clipper mission will probably happen for the only reason space programs happen: Congress approved the money. Readers will roll their eyes but keep reading as Brown engagingly describes the cutthroat NASA political landscape, in which Mars gets the most attention, leaving advocates of other planets fuming. Leading-edge technology usually goes over budget, but Congress rarely makes up the difference, so high priority space programs that run short extract money from other programs and sometimes get them cancelled. Few experts expect the 2024 launch date to hold, but some time after 2030, we may find evidence of fish on Europa.

A delightful slice of NASA life.