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Science | Space | Aliens & UFOs

Do Aliens & UFOs exist? Has man been visited by other races from other worlds? Explore the fascinating evidence for and against the existence of extraterrestrials.

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Naked Aliens

Have aliens arrived on Earth naked? Two contactees claim that a naked alien has come to visit our planet in last century. How are their stories similar and how are they different?


Richard Sharpe Shaver, UFO Hoaxster

Richard Sharpe Shaver, UFO Hoaxster

Richard Sharpe Shaver was a controversial UFO storyteller promoted by Ray Palmer. Check out his amazing stories of aliens called deros and teros. See more »

Spring Heeled Jack

Spring Heeled Jack

Spring Heeled Jack is a legendary English character, a Victorian-era murderer. Read why some think Spring Heeled Jack may have been an alien humanoid. See more »

Ether Ships

Ether Ships

The theory of ether ships is one of many UFO theories that seek to explain UFO phenomena. Read about ether ships and where they might come from. See more »

Hollow Earth Theory

Hollow Earth Theory

Hollow earth theory was the brainchild of John Cleves Symmes, who sought to explore Earth's center. Read why some believe UFOs live inside the Earth. See more »

The Oz Factor

The Oz Factor

The Oz Factor is a sensation that UFO witnesses experience. Learn where the term "Oz Factor" came from, and what the experience is like. See more »

Space Animals

Space Animals

John Philip Bessor originally theorized that UFOs could be a form of space animal. Learn more about space animals and the UFO critter theory. See more »

Explaining UFOs

Explaining UFOs

Both skeptics and believers spend time researching UFO reports and explaining UFOs as natural or supernatural events. Read more about explaining UFOs. See more »

UFOs & Government Secrecy

UFOs & Government Secrecy

Does the government maintain secret contact with extraterrestrials? Learn about theories of UFOs and government secrecy in the CIA and the NSA. See more »

UFO Theory

UFO Theory

UFO theories vary as widely in their credibility as in their imagination. Learn about theories of UFOs, aliens, spaceships, and the government. See more »

UFOs and the Government

UFOs and the Government

Project Sign was the first major government UFO investigation project. Read how Project Sign began and the history of UFOs and the U.S. government. See more »