Infinity Beckoned illuminates a critical period of space history when humans dared an expansive leap into the inner solar system. With an irreverent and engaging style, Jay Gallentine conveys the trials and triumphs of the people on the ground who conceived and engineered the missions that put robotic spacecraft on the heavenly bodies nearest our own. These dedicated space pioneers include such individuals as Soviet Russia's director of planetary missions, who hated his job but kept at it for fifteen years, enduring a paranoid bureaucracy where even the copy machines were strictly regulated. Based on numerous interviews, Gallentine delivers a rich variety of stories involving the men and women, American and Russian, responsible for such groundbreaking endeavors as the Mars Viking missions of the 1970s and the Soviet Venera flights to Venus in the 1980s. From the dreamers responsible for the Venus landing who discovered that dropping down through heavy clouds of sulfuric acid and 900-degree heat was best accomplished by surfing to the five-man teams puppeteering the Soviet moon rovers from a top-secret, off-the-map town without a name, the people who come to life in these pages persevered in often trying, thankless circumstances. Their legacy is our better understanding of our own planet and our place in the cosmos. Purchase the audio edition.

Ambassadors from Earth reminds us that our first mad scrambles to reach orbit, the moon, and the planets were littered with enough histrionics and cliff-hanging turmoil to rival the most far-out sci-fi film. But it all really happened! Drawing on original interviews with key players and bolstered by previously unpublished photographs, journal excerpts, and primary source documents, Jay Gallentine delivers a quirky and unforgettable look at the lives and legacy of the people who conceived, built, and guided our first unmanned spacecraft and planetary probes. From the Sputnik and Explorer satellites of the late 1950s, to the thrilling Voyager "Grand Tour" of the '70s and '80s, they yielded some of the most celebrated successes and spectacular failures of the space age. Confessed one participant, "We were making it up as we went along." Gallentine fearlessly clambers to the bottom of a surprisingly bitter controversy over who first developed the technique of using gravity to steer a spacecraft. Also of special note are his candid discussions with James Van Allen, the discoverer of the rings of planetary radiation that now bear his name.