Ambassadors from Earth - Pioneering Explorations with Unmanned Spacecraft

Gallentine, a film and video engineer and a lifelong space buff, tells tales about the exciting early days of unmanned space exploration in this sprawling account. From Sputnik through James Van Allen and his assistant George Ludwig's discovery, with a tape recorder, of massive amounts of radioactivity above the atmosphere, to the two Voyager missions with their gold-plated Rosetta stones, many lifelong space buffs will know Gallentine's story by heart. What makes his account special is the amount of access he had to Van Allen and Ludwig, who shared previously unknown details of their early collaboration.