In The Interstellar Age, award-winning planetary scientist Jim Bell reveals what continues to drive the members of the extraordinary team that launched the Voyager spacecraft, including Ed Stone, Voyager’s chief scientist; Charley Kohlhase, an orbital dynamics engineer behind many of the planetary slingshot maneuvers that enabled the Voyagers to travel so far; and an array of expert astrophysicists, geologists, and technicians, as well as not-yet-expert undergraduate and graduate students. This is the twelve-billion-mile ride of their lives.