Since rumours of alien spacecraft emerged from Roswell, New Mexico in 1947, UFOs have increasingly been the subject matter of grainy, hand-held, out-of-focus 'proof'. Riddle of the Skies however presents the eyewitness accounts of distinguished scientists and astronauts.
Is There Anybody Out There?
The Evidence on Earth
Is E.T. Here?
Encounters
UFO Europe: The Untold Stories
NASA's Unexplained Files
Close Encounters
Encounter: UFO
Evidence of the Unexplained
UFO
Ummo: La España alienígena
UFO
Raël: The Alien Prophet
Hangar 1: The UFO Files
Beyond: UFOS and the Unknown
Top Secret UFO Projects Declassified
UFOs Declassified
Investigation Alien
In Search of Aliens
UFOs: Investigating the Unknown
Unsolved Mysteries
The Secret of Skinwalker Ranch
The Proof Is Out There: Bermuda Triangle Edition