Book excerpt: A uniquely earthbound story of space travel, The Apollo Chronicles immerses readers in the obsessive lives and work of NASA's engineers from the starting gun of the space race through the triumphant Moon landings. Filled with new interviews, scrubbed of technical jargon, and infused with the turbulent backdrop of the 1960's, the narrative follows a handful of main characters through their longest days, tightest deadlines, and most confounding challenges. In the end, the surviving engineers reflect: How exactly did we do it, and what did we learn?