Synopsis

During the 1950s and early 1960s, a small band of pioneers pushed the boundaries of human endurance in the burgeoning age of space. Long before NASA's Mercury Seven captured the world’s attention, balloonists were the first to confront the harsh realities of the upper atmosphere – the frigid near-vacuum at the edge of our planet. In this perilous realm, they explored the limits of both human resilience and inventive spirit.