An unidentified flying object (UFO), or unidentified anomalous phenomenon (UAP), is any perceived airborne, submerged or transmedium phenomenon that cannot be immediately identified or explained. Upon investigation, most UFOs are identified as known objects or atmospheric phenomena, while a small number remain unexplained.
Donald Edward Keyhoe was an American Marine Corps naval aviator, writer of aviation articles and stories in a variety of publications, and tour manager of aviation pioneer Charles Lindbergh.
UFO conspiracy theories are a subset of conspiracy theories which argue that various governments and politicians globally, in particular the United States government, are suppressing evidence that unidentified flying objects are controlled by a non-human intelligence or built using alien technology. Such conspiracy theories usually argue that Earth governments are in communication or cooperation with extraterrestrial visitors despite public disclaimers, and further that some of these theories claim that the governments are explicitly allowing alien abduction.
Majestic 12, also known as Majic-12, and MJ-12 for short, is a purported organization that appears in UFO conspiracy theories. The organization is claimed to be the code name of an alleged secret committee of scientists, military leaders, and government officials, formed in 1947 by an executive order by U.S. President Harry S. Truman to facilitate recovery and investigation of alien spacecraft. The concept originated in a series of supposedly leaked secret government documents first circulated by ufologists in 1984. Upon examination, the Federal Bureau of Investigation (FBI) declared the documents to be "completely bogus", and many ufologists consider them to be an elaborate hoax. Majestic 12 remains popular among some UFO conspiracy theorists and the concept has appeared in popular culture including television, film and literature.
The Roswell incident is a conspiracy theory which alleges that the 1947 crash of a United States Army Air Forces balloon near Roswell, New Mexico was actually caused by an extraterrestrial spacecraft. Operated from the nearby Alamogordo Army Air Field and part of the top secret Project Mogul, the balloon was intended to detect Soviet nuclear tests. After metallic and rubber debris was recovered by Roswell Army Air Field personnel, the United States Army announced their possession of a "flying disc". This announcement made international headlines but was retracted within a day. Obscuring the true purpose and source of the crashed balloon, the Army subsequently stated that it was a conventional weather balloon.
The extraterrestrial hypothesis (ETH) proposes that some unidentified flying objects (UFOs) are best explained as being physical spacecraft occupied by extraterrestrial intelligence or non-human aliens, or non-occupied alien probes from other planets visiting Earth.
The Flying Saucers Are Real, by Donald Keyhoe, was a book that investigated reports of UFOs by United States Air Force fighters, personnel, and other aircraft, between 1947 and 1950.
The National Investigations Committee On Aerial Phenomena (NICAP) is an unidentified flying object (UFO) research group most active in the United States from the 1950s to the 1980s. It remains active primarily as an informational depository on the UFO phenomenon.
Flying Saucers from Outer Space is a non-fiction book by Donald Keyhoe about unidentified flying objects, aka UFOs.
Leonard Stringfield (1920–1994) was an American ufologist who took particular interest in crashed flying saucer stories.
From July 12 to 29, 1952, a series of unidentified flying object (UFO) sightings were reported in Washington, D.C., and later became known as the Washington flap, the Washington National Airport Sightings, or the Invasion of Washington. The most publicized sightings took place on consecutive weekends, July 19–20 and July 26–27. UFO historian Curtis Peebles called the incident "the climax of the 1952 (UFO) flap"—"Never before or after did Project Blue Book and the Air Force undergo such a tidal wave of (UFO) reports."
The Aztec, New Mexico, UFO hoax was a flying saucer crash alleged to have happened in 1948 in Aztec, New Mexico. The story was first published in 1949 by author Frank Scully in his Variety magazine columns, and later in his 1950 book Behind the Flying Saucers. In the mid-1950s, the story was exposed as a hoax fabricated by two con men, Silas M. Newton and Leo A. Gebauer, as part of a fraudulent scheme to sell supposed alien technology. Beginning in the 1970s, some ufologists resurrected the story in books claiming the purported crash was real. In 2013, an FBI memo claimed by some ufologists to substantiate the crash story was dismissed by the bureau as "a second- or third-hand claim that we never investigated".
The Coming of the Saucers is a 1952 book by original 'flying saucer' witness Kenneth Arnold and pulp magazine publisher Raymond Palmer. The book reprints and expands early articles the two had published in Palmer's Fate magazine. The work blends first-person accounts attributed to Arnold with third-person summations of UFO reports.
They Knew Too Much About Flying Saucers is a 1956 book by paranormal author Gray Barker. It was the first book to allege that "Men in Black" were covering up the existence of flying saucers.
John Olsen Lear, son of Learjet magnate Bill Lear, was an aviator who set multiple records, later flying cargo planes for the CIA during the Vietnam era.
The Flight 105 UFO sighting occurred on July 4, 1947, when three crew members aboard a United Airlines flight reported seeing multiple unidentified flying objects in the skies over the Pacific Northwest. The incident was among at least 800 similar sightings in the United States within a few weeks in the summer of 1947, but the first report by professional pilots. The U.S. military ultimately attributed what the crew members saw to "ordinary aircraft, balloons, birds, or pure illusion".
The 1947 flying disc craze was a rash of unidentified flying object reports in the United States that were publicized during the summer of 1947. The craze began on June 24, when media nationwide reported civilian pilot Kenneth Arnold's story of witnessing disc-shaped objects which headline writers dubbed "Flying Saucers". Such reports quickly spread throughout the United States; historians would later chronicle at least 800 "copycat" reports in subsequent weeks, while other sources estimate the reports may have numbered in the thousands.
The Rhodes UFO photographs, sometimes called the shoe-heel UFO photographs, purport to show a disc-like object flying above Phoenix, Arizona, United States. The two photographs were reportedly taken on July 7, 1947, by amateur astronomer and inventor William Albert Rhodes. They were printed in The Arizona Republic newspaper on July 9, along with Rhodes's account of his sighting of the object. Published near the end of the 1947 flying disc craze, the photographs were among the first showing an unidentified flying object. They continue to be discussed in the media into the 21st century.
The Report on Unidentified Flying Objects is a 1956 book by then-retired Air Force UFO investigator Edward J. Ruppelt, detailing his experience running Project Bluebook. The book was noted for its suggestion that a few UFO sightings might be linked to spikes of atomic radiation. Contemporary media summarized four topics discussed in the book:
The Roswell Incident is a 1980 book by Charles Berlitz and William Moore. The book helped to popularize stories of unusual debris recovered in 1947 by personnel of the Roswell Army Air Field.
