Join the heroic men and women of NASA on some of the greatest adventures ever undertaken, the quest to reach out beyond Earth and into the great unknown of space.

Narrated by Gary Sinise, and featuring rare interviews with legends Neil Armstrong, John Glenn, Jim Lovell and Buzz Aldrin, When We Left Earth: The NASA Missions explores the journeys, the heroes, and the triumphs of space exploration in a depth of detail previously experienced only by astronauts themselves.

Hubble is a global superstar and a household name. Follow the dangerous massive mission to revive the greatest science tool in Hubble: The Final Chapter to once again make history.

The on-site NASA engineers take viewers under the hood of the orbiter craft to explain the secrets of its success in Last Flight Of The Space Shuttle. This documentary examines the past, present and future of the shuttle program and U.S. space exploration.

Nasa's Unexplained Files combs through hours of evidence, interviews, and theories that attempt to explain the unexplained. From astronauts to abductees, a variety of sources submit film footage and first-hand testimonies to be examined in search for the truth.