Ufo - I casi italiani

The Age of A.I.

Contraption Masters

UFO

Raël: The Alien Prophet

Encounter: UFO

UFO

The Bell System Science Series

Top Secret UFO Projects Declassified

Stephen Hawking and the Theory of Everything

Tout s'explique

Into the Universe with Stephen Hawking

The Universe

Critter Fixers: Country Vets

Dinosaurs Inside & Out

In Search of Aliens

The Proof Is Out There: Bermuda Triangle Edition

UFOs Declassified

Hangar 1: The UFO Files

Ummo: La España alienígena

Quanta Magazine