The veteran of four space flights and the American record holder for consecutive days spent in space, Scott Kelly has experienced things very few have. Now, he takes us inside a sphere utterly inimical to human life. He describes navigating the extreme challenge of long-term spaceflight, both existential and banal: the devastating effects on the body; the isolation from everyone he loves and the comforts of Earth; the pressures of constant close cohabitation;...

Adapted from the memoir of NASA astronaut Scott Kelly, who spent a record-breaking year in space. How does a boy struggling in school become an American hero and a space pioneer? Daredevil behavior? Check. Whether it is sailing leaky boats in the Atlantic Ocean or joining an ambulance corps to race to the rescue, living on the edge is required behavior for an astronaut. Sibling rivalry? Check. An identical twin brother who both cheers you on and...