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.
Modern UFO history began with the 1947 UFO sighting by pilot Kenneth Arnold. But the roots of UFO stories stretch back to ancient and medieval days. Learn about the history of UFOs and strange phenomena from ancient times to the mid-20th century. See more »
Alien life forms would probably differ from those on Earth but still adhere to certain principles. Learn about astrobiology and the search for alien life forms.
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Less than 100 miles from Las Vegas, Nev., is the most famous secret military installation on the planet. Rumors swirl around this base, much like the mysterious aircraft that twist and turn in the skies overhead.
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The accounts are oddly similar: darting lights in a night sky, a hovering disc, radio interference... The stories span national and cultural boundaries -- how can so many people be "mistaken"? Learn about the evidence for and against alien UFOs and check out some of the stranger tales of contact.
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In July, 1947, unusual debris was found in Roswell, N.M. The U.S. Army stated they had received a crashed disc, only to rescind it hours later. Learn more about the Roswell,N.M. UFO crash.
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Are we alone? Jodie Foster's character in "Contact" didn't think so, and neither do the scientists who've been listening for an extraterrestrial message for decades.
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Many people have reported alien abduction stories. Most of the abductees have shared their stories through hypnosis -- which causes wide disagreement about their validity. Read more about alien abductions.
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In 1952, angel hair came drifting from the sky, falling over the French towns of Oloron and Gaillac. The short life of angel hair makes it difficult to analyze. Learn more about the history of angel hair UFOs.
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Ashtar is an interstellar ruler and leader of millions of extraterrestrials who is said to have contacted George van Tassel. Learn more about Ashtar.
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J. Allen Hynek was a scientific advisor to Project Blue Book, the government UFO research group. As time went on, he had more and more difficulty toeing the party line on UFO phenomena. Learn more about J. Allen Hynek and his UFO research.
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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?
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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.
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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.
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Foo fighters have been reported by fighter pilots since World War II. Were they with the Axis or Allies, or maybe from another planet? Read more about reports of foo fighters and censorship of foo fighter sightings.
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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."
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The history of the Roswell UFO incident has a long, complicated legacy of truth and conspiracy. From the crash site to the recovered alien bodies, there is a lot of speculation -- how much is believable? Learn more history of the Roswell UFO incident.
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Hollow earth theory was the brainchild of John Cleves Symmes, who sought to explore Earth's center, where UFOs supposedly come flying in and out. Read why some believe UFOs live inside the Earth.
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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.
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The Jackie Gleason UFO tale begins with President Nixon inviting him to see aliens at an Air Force Base. He wasn't told any details and was sworn to keep the secret. Check out the Jackie Gleason UFO story.
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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.
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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.
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