John Lear and is one of the chief conspiracy theorists of the so-called "dark side movement", which suspects a secret government of illicit dealings with aliens. Learn more about John Lear and the dark side.
Majestic 12, or MJ-12, was a secret government research team. The team was tasked with investigating multiple UFO crash sites. Read more about the Majestic 12 letter to Jaime Shandera and the ensuing controversy.
Howard Menger said he was a UFO contactee, and even made a free energy device based on UFO science. Other contactees have made similar claims and dubious business ventures. Read about Howard Menger and other UFO contactees.
In 1884 a UFO crash in Nebraska sent flaming bits of machinery flying through the air and startled residents. The long, cylindrical ship later disappeared when it rained. Read more about the 1884 Nebraska crash.
Star People are those who, according to Brad Steiger, live on Earth to prepare for the arrival of our alien relatives. Star People have unique traits that set them apart from ordinary humans. Read more about Star People.
The Straith Letter was fabricated by two UFO writers. The letter alleged U.S. State Department had significant evidence about extraterrestrial life. Read how the fake letter from a government official fooled UFO contactee George Adamski.
Bob Lazar claimed to have worked in the S-4 section of Area 51. On that top-secret Nevada research base, he claimed to see anti-gravity reactors and flying saucers in person. How truthful were his extravagant tales?
The Maury Island UFO incident was a UFO encounter concocted by Fred Crisman and Harold Dahl. Even after they confessed, this tale remained widespread, living up to its reputation as the "dirtiest hoax in UFO history."
Mon-Ka is a Martian, rumored to have been communicating with the Earth since the mid-1950s. Dick Miller first popularized the hoax in London, and the story spread. Read how Mon-Ka's fooled the city of Los Angeles.
George Adamski preached an interplanetary gospel based on contact with UFOs and aliens. Though serious investigators scoffed, he earned wide attention. Read about George Adamski and his "Space Brothers."
Richard Sharpe Shaver was a controversial UFO storyteller promoted by magazine editor Ray Palmer in the 1940s. Shave wrote amazing stories about aliens called deros and teros. Some called him a crackpot; some called him a prophet.
Spring Heeled Jack is a legendary English character. He was a mysterious a Victorian-era murderer, leaping from rooftop to rooftop, leaving a trail of tragedy in his wake. Read why some think Spring Heeled Jack may have been an alien humanoid.
The theory of ether ships is one of many UFO theories that seek to explain UFO phenomena. Ether ships have strange properties that allow them to travel widely. Read about ether ships and where they might come from.
Both skeptics and believers spend time researching UFO reports and explaining UFOs as natural or supernatural events, whether meteor or balloon or optical allusion or good old-fashioned mystery. Read more about explaining UFOs.
Since humans have observed strange phenomena, they have tried to explain them. UFO theories vary as widely in their credibility as in their imagination. Learn about theories of UFOs, aliens, spaceships, and the government.