Narrated by award-winning actor Gary Sinise, WHEN WE LEFT EARTH is the incredible story of humankind's greatest adventure, as it happened, told by the people who were there. From the early quest of the Mercury program to put a man in space, to the historic moon landings, through the Soyuz link-up and the first un-tethered space walk by Bruce McCandless, this is how the space age came of age. The vivid HD series features vintage rushes and all the key onboards filmed by the astronauts themselves. The sequences are captured by cameras onboard the spaceships, enabling the series to tell the stories in a depth never seen before.