This four part series explores the challenges and opportunities of modern space exploration. NASA is sizing up a new but familiar challenge: how to transport humans into deep space. After 30 years spent circling the Earth, NASA is building spacecraft to take astronauts beyond the Moon to an asteroid and eventually Mars. From rocket testers in Mississippi, to capsule builders in Florida, this is the story of the spacecraft and the technicians aiming to follow in the footsteps of their Apollo ancestors.  Includes the following Episodes: Space Voyages: The Moon and Beyond  Space Voyages: Into the Unknown  Space Voyages: Open For Business  Space Voyages: Surviving the Void  Shuttle Discovery s Last Mission