OBJETOS VOADORES NÃO INDENTIFICADOS PARA NOSSA COMPREENÇÃO???

Unidentified Flying Objects

I would like to believe in UFO's.   I have watched countless television programs about them, nothing really proving their existence.  So called documentaries present a lot of inconclusive photos and movie clips.  Most fuzzy and out of focus or look like superimposed images on otherwise common scenes.

There are thousands of web sites devoted to UFO studies, theories, testimonials and photos.  Even those who swear they have been abducted by alien beings and later released. 

Our universe is still being searched and there millions of unicerses being discovered by scientists using the Hubble and other telescopes.  It is hard to imagine that we humans here on earth are the only intelligence in all of the universes.  I believe there are other intelligent beings out there somewhere, other than just the human race we know of. 

However the mystery has not been solved.

I personally would love to see a flying saucer, UFO or alien space vehicle.  So far there is no real scientific proof either way, at least that has been made public. There are many who claim there has always been a government conspiracy to hide the truth.  Then there is area 51 in New Mexico where UFO theorists believe Roswell was the site of an alien crash in 1947. 

The following images are interesting, and were gathered from various web sites:

 

 

And My Favorite !

Apollo 14 astronaut Edgar Mitchell claims ETs have made contact! (click link)

UFO Evidence (click link) This one of the most comprehensive sites I have found.

The following is from Wikipedia, the free encyclopedia:

Unidentified flying object (commonly abbreviated UFO) is a term used to refer to any aerial phenomenon whose cause can not be easily or immediately determined. Both military and civilian research show that a significant majority of UFO sightings are identified after further investigation, either explicitly or indirectly (through the presence of clear and simple explanatory factors: see Occam's Razor.[1] The United States Air Force, who coined the term in 1952, initially defined UFOs as those objects which remain unidentified after scrutiny by expert investigators,[2] though the term UFO is often used more generally to describe any sighting unidentifiable to the reporting observer(s). Popular culture frequently takes the term UFO as a synonym for alien spacecraft. Some investigators now prefer to use the broader term Unidentified Aerial Phenomenon (or UAP), to avoid the confusion and speculative associations that have become attached to UFO.[3]

Studies have established that only a small percentage of reported UFOs are actual hoaxes,[4] while the majority are observations of some real but conventional object - most commonly aircraft, balloons, or astronomical objects such as meteors or bright planets - which have been misidentified by the observer as anomalies. A small percentage of reported sightings (usually 5%-20%) are classified as unidentified flying objects in the strictest sense. (see below for some studies)

The first reports and official investigations of UFOs began during World War II with sightings of so-called foo fighters by Allied airplane crews, and with widespread sightings of European "ghost rockets" in 1946. UFO reports became more common after the first widely publicized US sighting - reported by private pilot Kenneth Arnold in 1947 - which gave rise to the popular terms "flying saucer" and "flying disc". Since then, millions of people believe that they have seen UFOs[5], and tens of thousands of such reports have been catalogued.[6]

Contents [hide] 1 History 1.1 Early modern reports 1.2 The Kenneth Arnold sightings 2 Investigation and responses 2.1 American investigations 2.2 Canadian investigation 2.3 French investigation 2.4 British investigation 2.5 Astronomer reports 3 Identification of UFOs 3.1 UFO hypotheses 3.2 Documents and investigations regarding the Extraterrestrial Hypothesis 4 Physical evidence 5 Ufology 5.1 UFO researchers 5.2 UFO organizations 5.3 Reverse engineering 5.4 UFO categorization 6 Conspiracy theories 6.1 Allegations of evidence suppression 7 Famous hoaxes 8 UFOs in popular culture 8.1 Use in film and television 8.2 Use in Music 9 See also 10 References 10.1 General 10.2 Skepticism 10.3 Psychology 10.4 Histories 10.5 Technology 11 External links

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History

On April 14, 1561 the skies over Nuremberg, Germany were reportedly filled with a multitude of objects. Woodcut from 1566 by Hans Glaser.

Unexplained aerial observations have been reported throughout history. Some were undoubtedly astronomical in nature: comets, bright meteors, one or more of the five planets which can be seen with the naked eye, planetary conjunctions, or atmospheric optical phenomena such as parhelia and lenticular clouds. An example is Halley's Comet, which was recorded first by Chinese astronomers in 240 B.C. and possibly as early as 467 B.C.

Other historical reports seem to defy prosaic explanation, but assessing such accounts is difficult. Whatever their actual cause, such sightings throughout history were often treated as supernatural portents, angels, or other religious omens. Some objects in medieval paintings seem strikingly similar to UFO reports.[7]Art historians explain those objects as religious symbols, often represented in many other paintings of Middle-Age and Renaissance.[8]

Shen Kuo (1031–1095), a Song Chinese government scholar-official and prolific polymath inventor and scholar, wrote a vivid passage in his Dream Pool Essays (1088) about an unidentified flying object. He recorded the testimony of eyewitnesses in 11th century Anhui and Jiangsu (especially in the city of Yangzhou), who stated that a flying object with opening doors would shine a blinding light from its interior (from an object shaped like a pearl) that would cast shadows from trees for ten miles in radius, and was able to take off at tremendous speeds.[9]

Early modern reports

Main article: List of UFO sightings

Before the terms "flying saucer" were coined in 1947 and "UFO" in 1952, there were a number of reports of unidentified aerial phenomena. These reports date from the mid-nineteenth to early twentieth century. They include:

• On January 25, 1878, The Denison Daily News wrote that local farmer John Martin had reported seeing a large, dark, circular flying object resembling a balloon flying "at wonderful speed." Martin also said it appeared to be about the size of a saucer, the first known use of the word "saucer" in association with a UFO. [10]

Drawing of E. W. Maunder's November 17, 1882 "auroral beam" by astronomer Rand Capron, Guildown Observatory, Surrey, UK, who also observed it.

• On November 17, 1882, a UFO was observed by astronomer Edward Walter Maunder of the Greenwich Royal Observatory and some other European astronomers. Maunder in The Observatory reported "a strange celestial visitor" that was "disc-shaped", "torpedo-shaped", "spindle-shaped", or "just like a Zeppelin" dirigible (as he described it in 1916). It moved rapidly from horizon to horizon. The sighting was during high auroral activity; therefore Maunder assumed it was some extraordinary auroral phenomenon never before seen and called it an "auroral beam".
• On February 28, 1904, there was a sighting by three crew members on the USS Supply 300 miles west of San Francisco, reported by Lt. Frank Schofield, later to become Commander-in-Chief of the Pacific Battle Fleet. Schofield wrote of three bright red egg-shaped and circular objects flying in echelon formation that approached beneath the cloud layer, then changed course and "soared" above the clouds, departing directly away from the earth after two to three minutes. The largest had an apparent size of about six suns. [11]
• 1916 and 1926: the three oldest known pilot UFO sightings, of 1305 cataloged by NARCAP. On January 31, 1916, a UK pilot near Rochford reported a row of lights, like lighted windows on a railway carriage, that rose and disappeared. In January 1926, a pilot reported six "flying manhole covers" between Wichita, Kansas and Colorado Springs, Colorado. In late September 1926, an airmail pilot over Nevada was forced to land by a huge, wingless cylindrical object.
• On August 5, 1926, while traveling in the Humboldt Mountains of Tibet's Kokonor region, Nicholas Roerich reported that members of his expedition saw "something big and shiny reflecting sun, like a huge oval moving at great speed".
• In the Pacific and European theatres during World War II, "Foo-fighters" (metallic spheres, balls of light and other shapes that followed aircraft) were reported and on occasion photographed by Allied and Axis pilots but were dismissed by scientists as St. Elmo's Fire or illusions. [12][13]
• On February 25, 1942, the U.S. Army detected a unidentified aircraft both visually and on radar over the Los Angeles, California region. No readily apparent explanation was offered. The incident later became known as the Battle of Los Angeles, or the West coast air raid.
• In 1946, there were over 2000 reports of unidentified aircraft in the Scandinavian nations, along with isolated reports from France, Portugal, Italy and Greece, then referred to as "Russian hail", and later as "ghost rockets", because it was thought that these mysterious objects were Russian tests of captured German V1 or V2 rockets. Over 200 were tracked on radar and deemed to be "real physical objects" by the Swedish military.

The Kenneth Arnold sightings

Main article: Kenneth Arnold#June 24, 1947 UFO sighting

This shows the report Kenneth Arnold filed in 1947 about his UFO sighting.

The post World War II UFO phase in the United States began with a famous sighting by American businessman Kenneth Arnold on June 24, 1947 while flying his private plane near Mount Rainier, Washington. He reported seeing nine brilliantly bright objects flying across the face of Rainier.

This shows Kenneth Arnold holding a picture of a drawing of the crescent shaped UFO he saw in 1947.

Although there were other 1947 U.S. sightings of similar objects that preceded this, it was Arnold's sighting that first received significant media attention and captured the public's imagination. Arnold described what he saw as being "flat like a pie pan", "shaped like saucers and were so thin I could barely see them...", "half-moon shaped, oval in front and convex in the rear. ...they looked like a big flat disk" (see Arnold's drawing at right), and flew "like a saucer would if you skipped it across the water". (One of the objects, however, he would describe later as being almost crescent-shaped, as shown in illustration at left.) Arnold’s descriptions were widely reported and within a few days gave rise to the terms flying saucer and flying disk.[14] Arnold’s sighting was followed in the next few weeks by hundreds of other reported sightings, mostly in the U.S., but in other countries as well.

After reports of the Arnold sighting hit the media, other cases began to be reported in increasing numbers. In one instance a United Airlines crew sighting of nine more disc-like objects over Idaho on the evening of July 4. At the time, this sighting was even more widely reported than Arnold’s and lent considerable credence to Arnold’s report.

American UFO researcher Ted Bloecher, in his comprehensive review of newspaper reports (including cases that preceded Arnold's), found a sudden surge upwards in sightings on July 4, peaking on July 6–8. Bloecher noted that for the next few days most American newspapers were filled with front-page stories of the new "flying saucers" or "flying discs". Reports began to rapidly tail off after July 8 [15], when officials began issuing press statements on the Roswell UFO incident, in which they explained the debris as being that of a weather balloon. [16]

Over several years in the 1960s, Bloecher (aided by physicist James E. McDonald) discovered 853 flying disc sightings that year from 140 newspapers from Canada, Washington D.C, and every U.S. state except Montana. [17]

Investigation and responses

UFOs have been subject to various investigations over the years, varying widely in scope and scientific rigor. Governments or independent academics in the United States, Canada, the United Kingdom, France, Belgium, Sweden, Brazil, Chile, Mexico, Spain, and the Soviet Union are known to have investigated UFO reports at various times. Among the best known government studies are Project Blue Book, previously Project Sign and Project Grudge, conducted by the United States Air Force from 1947 until 1969, the secret U.S. Army/Air Force Project Twinkle investigation into green fireballs (1948–1951), and Brazilian Air Force Operation Saucer (1977). A public research effort conducted by the Condon Committee for the USAF, which arrived at a negative conclusion in 1968, marked the end of the US government's official investigation of UFOs, though documents indicate various government intelligence agencies continue to unofficially investigate or monitor the situation. [18]

No public government investigation has ever openly declared UFOs to be real, unexplained objects or of concern to national defense. (However, see below for some internal, secret studies that have concluded otherwise.) Some private studies have been neutral in their conclusions, but argued the inexplicable core cases called for continued scientific study. Examples are the Sturrock Panel study of 1998 and the 1970 AIAA review of the Condon Report.

American investigations

Following the large U.S. surge in sightings in June and early July 1947, on July 9, 1947, Army Air Force (AAF) intelligence, in cooperation with the FBI, began a formal investigation into selected best sightings with characteristics that could not be immediately rationalized, which included Kenneth Arnold’s and the United Airlines crew’s. The AAF used "all of its scientists" to determine whether or not "such a phenomenon could, in fact, occur". The research was "being conducted with the thought that the flying objects might be a celestial phenomenon," or that "they might be a foreign body mechanically devised and controlled."[19] Three weeks later in a preliminary defense estimate, the air force investigation decided that, "This ‘flying saucer’ situation is not all imaginary or seeing too much in some natural phenomenon. Something is really flying around."[20]

A further review by the intelligence and technical divisions of the Air Materiel Command at Wright Field reached the same conclusion, that "the phenomenon is something real and not visionary or fictitious," that there were objects in the shape of a disc, metallic in appearance, and as big as man-made aircraft. They were characterized by "extreme rates of climb [and] maneuverability," general lack of noise, absence of trail, occasional formation flying, and "evasive" behavior "when sighted or contacted by friendly aircraft and radar," suggesting a controlled craft. It was thus recommended in late September 1947 that an official Air Force investigation be set up to investigate the phenomenon. It was also recommended that other government agencies should assist in the investigation. [21]

This led to the creation of the Air Force’s Project Sign at the end of 1947, one of the earliest government studies to come to a secret extraterrestrial conclusion. In August 1948, Sign investigators wrote a top-secret intelligence estimate to that effect. The Air Force Chief of Staff Hoyt Vandenberg ordered it destroyed. The existence of this suppressed report was revealed by several insiders who had read it, such as astronomer and USAF consultant Dr. J. Allen Hynek and Capt. Edward J. Ruppelt, the first head of the USAF's Project Blue Book. [22]

Project Sign was dismantled and became Project Grudge at the end of 1948. Angered by the low quality of investigations by Grudge, the Air Force Director of Intelligence reorganized it as Project Blue Book in late 1951, placing Ruppelt in charge. Blue Book closed down in 1970, ending the official Air Force UFO investigations. However, a 1969 USAF document, known as the Bolender memo, plus later government documents revealed that nonpublic U.S. government UFO investigations continued after 1970. The Bollender memo first stated that "reports of unidentified flying objects which could affect national security... are not part of the Blue Book system," indicating that more serious UFO incidents were already handled outside of the public Blue Book investigation. The memo then added, "reports of UFOs which could affect national security would continue to be handled through the standard Air Force procedures designed for this purpose."

Use of UFO instead of the popular flying saucer was first suggested in 1952 by Ruppelt, who felt that flying saucer did not reflect the diversity of the sightings. Ruppelt suggested that UFO should be pronounced as a word — you-foe. However it is generally pronounced by forming each letter: U.F.O. His term was quickly adopted by the Air Force, which also briefly used "UFOB" circa 1954, for Unidentified Flying Object. Ruppelt recounted his experiences with Project Blue Book in his memoir, The Report on Unidentified Flying Objects (1956), also the first book to use the term.[23]

Air Force Regulation 200-2,[24] issued in 1953 and 1954, defined an Unidentified Flying Object ("UFOB") as "any airborne object which by performance, aerodynamic characteristics, or unusual features, does not conform to any presently known aircraft or missile type, or which cannot be positively identified as a familiar object." The regulation also said UFOBs were to be investigated as a "possible threat to the security of the United States" and "to determine technical aspects involved." As with any then-ongoing investigation, Air Force personnel did not discuss the investigation with the press.[25][26]

Well known American investigations include:

• Project Blue Book, previously Project Sign and Project Grudge, conducted by the United States Air Force from 1947 until 1969
• The secret U.S. Army/Air Force Project Twinkle investigation into green fireballs (1948–1951)
• Ghost rockets investigations by the Swedish, U.K., U.S., and Greek militaries (1946–1947)
• The secret CIA Robertson Panel (1953)
• The secret USAF Project Blue Book Special Report No. 14 by the Battelle Memorial Institute (1951–1954)
• The Brookings Report (1960), commissioned by NASA
• The public Condon Committee (1966–1968)
• The private Sturrock Panel (1998)

Another early U.S. Army study, established sometime in the 1940s and of which little is known, was called the Interplanetary Phenomenon Unit (IPU). In 1987, British UFO researcher Timothy Good received a letter confirming the existence of the IPU from the Army Director of Counter-intelligence, in which it was stated, "...the aforementioned Army unit was disestablished during the late 1950s and never reactivated. All records pertaining to this unit were surrendered to the U.S. Air Force Office of Special Investigations in conjunction with operation BLUEBOOK." The IPU records have never been released.[27]

Thousands of documents released under FOIA also indicate that many U.S. intelligence agencies collected (and still collect) information on UFOs, including the Defense Intelligence Agency (DIA), FBI, CIA, National Security Agency (NSA), as well as military intelligence agencies of the Army and Navy, in addition to the Air Force. [28]

The investigation of UFOs has also attracted many civilians, who in the U.S formed research groups such as National Investigations Committee On Aerial Phenomena (NICAP, active 1956-1980), Aerial Phenomena Research Organization (APRO, 1952-1988), Mutual UFO Network (MUFON, 1969-), and Center for UFO Studies (CUFOS, 1973-).

Canadian investigation

The Falcon Lake incident report filed by the Royal Canadian Mounted Police on Stephen Michalak claimed incident with a UFO.

In Canada, the Department of National Defence has dealt with reports, sightings and investigations of UFOs across Canada. In addition to conducting investigations into crop circles in Duhamel, Alberta, it still identifies the Falcon Lake incident in Manitoba and the Shag Harbour incident in Nova Scotia as "unsolved".[29]

The Canadian studies include Project Magnet (1950–1954) and Project Second Story (1952–1954)

French investigation

Wikinews has related news: French Space Agency CNES releases UFO files Pilots spot 'UFOs' near the Channel Islands

In March 2007, the French Centre National d'Études Spatiales (CNES) published an archive of UFO sightings and other phenomena online.[30]

French studies include GEPAN/SEPRA/GEIPAN (1977–), within the French space agency CNES, the longest ongoing government-sponsored investigation, and the private French COMETA panel (1996–1999)

British investigation

The UK conducted various investigations into UFO sightings and related stories. The contents of some of these investigations have since been released to the public.

Eight file collections on UFO sightings, dating from 1978 to 1987, were first released on May 14, 2008, to the UK National Archives by the Ministry of Defence.[31] Although kept secret from the public for many years, most of the files have low levels of classification and none is classified Top Secret. 200 files are set to be made public by 2012. The files are correspondence from the public sent to government officials, such as the MoD and Margaret Thatcher. The MoD released the files under the Freedom of Information Act due to requests from researchers. [32] These files include, but are not limited to, UFOs over Liverpool and the Waterloo Bridge in London.[33]

On October 20, 2008 more UFO files were released. One case released detailed that in 1991 an Alitalia passenger aircraft was approaching Heathrow Airport when the pilots saw what they described as a "cruise missile" flew extremely close to the cockpit. The pilots believed that a collision was imminent. UFO expert Dr David Clarke says that this is one of the most convincing cases for a UFO he has come across. [34]

British investigations include The UK's Flying Saucer Working Party. Its final report, published in 1951, remained secret for over 50 years. The Working Party concluded that all UFO sightings could be explained as misidentifications of ordinary objects or phenomena, optical illusions, psychological delusions or hoaxes. The report stated: ‘We accordingly recommend very strongly that no further investigation of reported mysterious aerial phenomena be undertaken, unless and until some material evidence becomes available’.

A secret study of UFOs undertaken for the UK’s Ministry of Defence (MoD) between 1996 and 2000 and was publicly released in 2006. The report is titled "Unidentified Aerial Phenomena in the UK Defence Region" and was code-named Project Condign. The report confirmed earlier findings that the main causes of UFO sightings are misidentification of man-made and natural objects. The report noted: "No artefacts of unknown or unexplained origin have been reported or handed to the UK authorities, despite thousands of UAP reports. There are no SIGINT, ELINT or radiation measurements and little useful video or still IMINT." It concluded: "There is no evidence that any UAP, seen in the UKADR [UK Air Defence Region], are incursions by air-objects of any intelligent (extraterrestrial or foreign) origin, or that they represent any hostile intent."

In contrast, Nick Pope, who headed the MoD UFO desk from 1991-1994, states that while about 80% of the cases he investigated were misidentifications of known objects and phenomena (while 15% of sightings had insufficient information), about 5% "seemed to defy any conventional explanation." These included cases with multiple and/or highly trained witnesses such as pilots or military personnel, corroboration from radar or video/photography, and involved apparent structured craft with speeds and maneuverability beyond that of human origin.[35] Stopping short of an extraterrestrial explanation (though not discounting it), Pope believes the UFO phenomenon is quite real and raises serious defense, national security, and air safety issues. Pope describes many of the perplexing cases, such as the Rendlesham Forest incident, and the politics surrounding UFOs in his book Open Skies, Closed Minds.

Astronomer reports

The Air Force's Project Blue Book files indicate that approximately 1%[36] of all unknown reports came from amateur and professional astronomers or other users of telescopes (such as missile trackers or surveyors). In the 1970s, astrophysicist Peter A. Sturrock conducted two surveys of the American Institute of Aeronautics and Astronautics and American Astronomical Society. About 5% of the members polled indicated that they had had UFO sightings. In 1980, a survey of 1800 members of various amateur astronomer associations by Gert Helb and astronomer J. Allen Hynek of the Center for UFO Studies (CUFOS) found that 24% responded "yes" to the question "Have you ever observed an object which resisted your most exhaustive efforts at identification?"

Astronomer Clyde Tombaugh, who admitted to six UFO sightings, including three green fireballs supported the Extraterrestrial hypothesis (ETH) for UFOs and stated he thought scientists who dismissed it without study were being "unscientific." Another astronomer was Dr. Lincoln LaPaz, who had headed the Air Force's investigation into the green fireballs and other UFO phenomena in New Mexico. LaPaz reported two personal sightings, one of a green fireball, the other of an anomalous disc-like object. Even later UFO debunker Dr. Donald Menzel filed a UFO report in 1949.

Identification of UFOs

Main article: Identification studies of UFOs

Fata Morgana, a type of mirage in which objects located below the astronomical horizon appear to be hovering in the sky, may be responsible for some UFO sightings. Fata Morgana can also magnify the appearance of distant objects or distort them to be unrecognizable.[37]

Studies show that after careful investigation, the majority of UFOs can be identified as ordinary objects or phenomena (see Identification studies of UFOs). The most commonly found identified sources of UFO reports are:

• Astronomical objects (bright stars, planets, meteors, re-entering man-made spacecraft, artificial satellites, and the moon)
• Aircraft (advertising planes and other aircraft, missile launches)
• Balloons (weather balloons, prank balloons, large research balloons)

Much less common sources of UFO reports include:

• Other atmospheric objects and phenomena (birds, unusual clouds, kites, flares)
• Light phenomena (mirages, Fata Morgana, moon dogs, searchlights and other ground lights, etc.)
• Hoaxes

A study by the Battelle Memorial Institute of US Air Force reports included these categories as well as a "psychological" one. However, the scientific analysts were unable to come up with prosaic explanations for 21.5% of the 3200 cases they examined and 33% of what were considered the best cases remained unexplained, double the number of the worst cases. (See full statistical breakdown in Identification studies of UFOs). Of the 69% identifieds, 38% were deemed definitely explained while 31% were thought to be "questionable." About 9% of the cases were considered to have insufficient information to make a determination.

The official French government UFO investigation (GEPAN/SEPRA), run within the French space agency CNES between 1977 and 2004, scientifically investigated about 6000 cases and found that 13.5% defied any rational explanation, 46% were deemed definitely or likely identifiable, while 41% lacked sufficient information for classification.

An individual 1979 study by CUFOS researcher Allan Hendry found, as did other investigations, that only a small percentage of cases he investigated were hoaxes (<1%) and that most sightings were actually honest misidentifications of prosaic phenomena. Hendry attributed most of these to inexperience or misperception.[38] However, Hendry's figure for unidentified cases was considerably lower than many other UFO studies such as Project Blue Book or the Condon Report which have found rates of unidentified cases ranging from 6% to 30%. Hendry found that 88.6% of the cases he studied had a clear prosaic explanation, and he discarded a further 2.8% due to unreliable or contradictory witnesses or insufficient information. The remaining 8.6% of reports could not definitively be explained by prosaic phenomena, although he felt that a further 7.1% could possibly be explained, leaving only the very best 1.5% without plausible explanation.

UFO hypotheses

The inclusion or exclusion of items from this list, or length of this list, is disputed. Please discuss this issue on the talk page.

To account for unsolved UFO cases, several hypotheses have been proposed.

• The Extraterrestrial hypothesis (ETH), defined by Edward U. Condon in the 1968 Condon Report as "The idea that some UFOs may be spacecraft sent to Earth from another civilization, or on a planet associated with a more distant star", further attributing the popularity of the idea to Donald Keyhoe's UFO book from 1950 [39], though the idea clearly predated Keyhoe, appearing in newspapers and various government documents (see immediately below). This is probably the most popular theory among Ufologists.
• The Interdimensional hypothesis, that UFOs are objects crossing over from other dimensions or parallel universe, popularly proposed by Jacques Vallée, [40] though also predating him.
• The Paranormal/Occult Hypothesis; A variant of the Interdimensional Hypothesis, invoked to explain so-called paranormal aspects sometimes associated with UFO reports
• That UFOs are time machines or vehicles from a future Earth, perhaps made by our descendants.
• The Psychosocial Hypothesis, that what people report as UFO experiences is the result of psychological misperception mechanisms and is strongly influenced by popular culture.
• That UFOs represent poorly understood or still unknown natural phenomena, such as ball lightning or sprites.[41]
• The Earthquake lights/Tectonic Strain hypothesis: UFOs are caused by strains in Earth's crust near earthquake faults, which can also supposedly induce hallucinations.
• That UFOs are military flying saucers; top secret or experimental aircraft unfamiliar to most people.

Documents and investigations regarding the Extraterrestrial Hypothesis

Other private or governmental studies, some secret, have concluded in favor of the Extraterrestrial hypothesis (ETH), or have had members who disagreed with official conclusions against the conclusion by committees and agencies to which they belonged. The following are examples of sources that have focused specifically on the topic:

• In 1967, Greek physicist Paul Santorini, a Manhattan Project scientist, publicly stated that a 1947 Greek government investigation that he headed into the European Ghost rockets of 1946 quickly concluded that they were not missiles. Santorini claimed the investigation was then quashed by military officials from the U.S., who knew them to be extraterrestrial, because there was no defense against the advanced technology and they feared widespread panic should the results become public.[42]

November 1948 USAF Top Secret document citing extraterrestrial opinion

• A 1948 Top Secret USAF Europe document (at right) states that Swedish air intelligence informed them that at least some of their investigators into the ghost rockets and flying saucers concluded they had extraterrestrial origins: "...Flying saucers have been reported by so many sources and from such a variety of places that we are convinced that they cannot be disregarded and must be explained on some basis which is perhaps slightly beyond the scope of our present intelligence thinking. When officers of this Directorate recently visited the Swedish Air Intelligence Service... their answer was that some reliable and fully technically qualified people have reached the conclusion that 'these phenomena are obviously the result of a high technical skill which cannot be credited to any presently known culture on earth.' They are therefore assuming that these objects originate from some previously unknown or unidentified technology, possibly outside the earth."[43]
• In 1948, the USAF's Project Sign wrote a Top Secret Estimate of the Situation, concluding that the ETH was the most likely explanation for the most perplexing unexplained cases. The study was ordered destroyed by USAF chief of staff General Hoyt Vandenberg, citing lack of proof. Knowledge of the existence of the Estimate has come from insiders who said they read a surviving copy, including later USAF Project Blue Book head Edward J. Ruppelt and astronomer and USAF consultant Dr. J. Allen Hynek.
• West Germany, in conjunction with other European countries, conducted a secret study from 1951 to 1954, also concluding that UFOs were extraterrestrial. This study was revealed by German rocketry pioneer Hermann Oberth, who headed the study and who also made many public statements supporting the ETH in succeeding years. At the study's conclusion in 1954, Oberth declared, "These objects (UFOs) are conceived and directed by intelligent beings of a very high order. They do not originate in our solar system, perhaps not in our galaxy." Soon afterwards, in an article in The American Weekly, October 24, 1954, Oberth wrote "It is my thesis that flying saucers are real and that they are space ships from another solar system. I think that they possibly are manned by intelligent observers who are members of a race that may have been investigating our earth for centuries..." [44]
• During the height of the flying saucer "flap" of July 1952, including highly publicized radar/visual and jet intercepts over Washington, D.C., the FBI was informed by the Air Force Directorate of Intelligence that they thought the "flying saucers" were either "optical illusions or atmospheric phenomena" but then added that, "some Military officials are seriously considering the possibility of interplanetary ships." [45]
• The CIA started their own internal scientific review the following day. Some CIA scientists were also seriously considering the ETH. An early memo from August was very skeptical, but also added, "...as long as a series of reports remains 'unexplainable' (interplanetary aspects and alien origin not being thoroughly excluded from consideration) caution requires that intelligence continue coverage of the subject." A report from later that month was similarly skeptical but nevertheless concluded "...sightings of UFOs reported at Los Alamos and Oak Ridge, at a time when the background radiation count had risen inexplicably. Here we run out of even 'blue yonder' explanations that might be tenable, and we still are left with numbers of incredible reports from credible observers." A December 1952 memo from the Assistant CIA Director of Scientific Intelligence (O/SI) was much more urgent: "...the reports of incidents convince us that there is something going on that must have immediate attention. Sightings of unexplained objects at great altitudes and traveling at highs speeds in the vicinity of U.S. defense installation are of such nature that they are not attributable to natural phenomena or known types of aerial vehicles." Some of the memos also made it clear that CIA interest in the subject was not to be made public, partly in fear of possible public panic. (Good, 331–335)
• The CIA organized the January 1953 Robertson Panel of scientists to debunk the data collected by the Air Force's Project Blue Book. This included an engineering analysis of UFO maneuvers by Blue Book (including a motion picture film analysis by Naval scientists) that had concluded UFOs were under intelligent control and likely extraterrestrial.[46]
• Extraterrestrial "believers" within Project Blue Book included Major Dewey Fournet, in charge of the engineering analysis of UFO motion, who later became a board member on the civilian UFO organization NICAP. Blue Book director Edward J. Ruppelt privately commented on other firm "pro-UFO" members in the USAF investigations, including some Pentagon generals, such as Charles P. Cabell, USAF Chief of Air Intelligence, who angry at the inaction and debunkery of Project Grudge, dissolved it in 1951, established Project Blue Book in its place, and made Ruppelt director. [47] In 1953, Cabell became deputy director of the CIA. Another defector from the official Air Force party line was consultant Dr. J. Allen Hynek, who started out as a staunch skeptic. After 20 years of investigation, he changed positions and generally supported the ETH. He became the most publicly known UFO advocate scientist in the 1970s and 1980s.
• The first CIA Director, Vice Admiral Roscoe H. Hillenkoetter, stated in a signed statement to Congress, also reported in the New York Times, February 28, 1960, "It is time for the truth to be brought out... Behind the scenes high-ranking Air Force officers are soberly concerned about the UFOs. However, through official secrecy and ridicule, many citizens are led to believe the unknown flying objects are nonsense... I urge immediate Congressional action to reduce the dangers from secrecy about unidentified flying objects." In 1962, in his letter of resignation from NICAP, he told director Donald Keyhoe, "I know the UFOs are not U.S. or Soviet devices. All we can do now is wait for some actions by the UFOs."[48]
• Although the 1968 Condon Report came to a negative conclusion (written by Condon), it is known that many members of the study strongly disagreed with Condon's methods and biases. Most quit the project in disgust or were fired for insubordination. A few became ETH supporters. Perhaps the best known example is Dr. David Saunders, who in his 1968 book UFOs? Yes lambasted Condon for extreme bias and ignoring or misrepresenting critical evidence. Saunders wrote, "It is clear... that the sightings have been going on for too long to explain in terms of straightforward terrestrial intelligence. It's in this sense that ETI (Extra Terrestrial Intelligence) stands as the 'least implausible' explanation of 'real UFOs'." [49]
• In 1999, the private French COMETA report (written primarily by military defense analysts) stated the conclusion regarding UFO phenomena, that a "single hypothesis sufficiently takes into account the facts and, for the most part, only calls for present-day science. It is the hypothesis of extraterrestrial visitors." [10] The report noted issues with formulating the extraterrestrial hypothesis, likening its study to the study of meteorites, but concluded that although it was far from the best scientific hypothesis, "strong presumptions exist in its favour". The report also concludes that the studies it presents "demonstrate the almost certain physical reality of completely unknown flying objects with remarkable flight performances and noiselessness, apparently operated by intelligent [beings] … Secret craft definitely of early origins (drones, stealth aircraft, etc.) can only explain a minority of cases. If we go back far enough in time, we clearly perceive the limits of this explanation."
• Jean-Jacques Velasco, the head of the official French UFO investigation SEPRA, wrote a book in 2005 saying that 14% of the 5800 cases studied by SEPRA were utterly inexplicable and extraterrestrial in origin. [50] Yves Sillard, the head of the new official French UFO investigation GEIPAN and former head of the French space agency CNES, echoes Velasco's comments and adds the U.S. is guilty of covering up this information.[51] Again, this isn't the official public posture of SEPRA, CNES, or the French government. (CNES recently placed their 5800 case files on the Internet starting March 2007.)

Physical evidence

Besides visual sightings, reports sometimes include claims of indirect and direct physical evidence, including cases studied by the military and various government agencies of different countries.

• Radar contact and tracking, sometimes from multiple sites. These may involve trained military personnel and control tower operators, simultaneous visual sightings, and aircraft intercepts. One such recent example were the mass sightings of large, silent, low-flying black triangles in 1989 and 1990 over Belgium, tracked by multiple NATO radar and jet interceptors, and investigated by Belgium's military (included photographic evidence). [52] Another famous case from 1986 was the JAL 1628 case over Alaska investigated by the FAA. [53]
• Photographic evidence, including still photos, movie film, and video, including some in the infrared spectrum (rare).[citation needed]
• Recorded visual spectrograms[citation needed]
• Recorded gravimetric (example) and magnetic disturbances (extremely rare)[citation needed]
• Claims of physical trace of landing UFOs, including ground impressions, burned and/or desiccated soil, burned and broken foliage, magnetic anomalies[specify], increased radiation levels, and metallic traces. See, e.g. Height 611 UFO Incident or the 1964 Lonnie Zamora's Socorro, New Mexico encounter of the USAF Project Blue Book cases). A well-known example from December 1980 was the USAF Rendlesham Forest Incident in England. Another less than two weeks later, in January 1981, occurred in Trans-en-Provence and was investigated by GEPAN, then France's official government UFO-investigation agency. Project Blue Book head Edward J. Ruppelt described a classic 1952 CE2 case involving a patch of charred grass roots.[54]
• Physiological effects on people and animals including temporary paralysis, skin burns and rashes, corneal burns, and symptoms superficially resembling radiation poisoning, such as the Cash-Landrum incident in 1980. One such case dates back to 1886, a Venezuelan incident reported in Scientific American magazine. [55]
• Animal/cattle mutilation cases, that some feel are also part of the UFO phenomenon. Such cases can and have been analyzed using forensic science techniques.[citation needed]
• Biological effects on plants such as increased or decreased growth, germination effects on seeds, and blown-out stem nodes (usually associated with physical trace cases or crop circles)[citation needed]
• Electromagnetic interference (EM) effects, including stalled cars[dubious – discuss], power black-outs, radio/TV interference, magnetic compass deflections[dubious – discuss], and aircraft navigation, communication, and engine disruption.[citation needed] A famous 1976 military case over Tehran, recorded in CIA and DIA classified documents, resulted in communication losses in multiple aircraft and weapons system failure in an F-4 Phantom II jet interceptor as it was about to fire a missile on one of the UFOs. This was also a radar/visual case. [56]
• Remote radiation detection, some noted in FBI and CIA documents occurring over government nuclear installations at Los Alamos National Laboratory and Oak Ridge National Laboratory in 1950, also reported by Project Blue Book director Ed Ruppelt in his book.[57]
• Actual hard physical evidence cases, such as 1957, Ubatuba, Brazil, magnesium fragments analyzed by the Brazilian government and in the Condon Report and by others. The 1964 Socorro/Lonnie Zamora incident also left metal traces, analyzed by NASA.[58]
• Angel hair and angel grass, possibly explained in some cases as nests from ballooning spiders or chaff.[citation needed]

These various reported physical evidence cases have been studied by various scientist and engineers, both privately and in official governmental studies (such as Project Blue Book, the Condon Committee, and the French GEPAN/SEPRA). A comprehensive scientific review of physical evidence cases was carried out by the 1998 Sturrock UFO panel.

Ufology

Main article: Ufology

Ufology is a neologism describing the collective efforts of those who study UFO reports and associated evidence.

UFO researchers

Main article: List of Ufologists

UFO organizations

Main article: UFO organizations

Reverse engineering

Attempts have been made to reverse engineer the possible physics behind UFOs through analysis of both eyewitness reports and the physical evidence, on the assumption that they are powered vehicles. Examples are former NASA and nuclear engineer James McCampbell in his book Ufology,[59] NACA/NASA engineer Paul R. Hill in his book Unconventional Flying Objects, and German rocketry pioneer Hermann Oberth. Among subjects tackled by McCampbell, Hill, and Oberth was the question of how UFOs can fly at supersonic speeds without creating a sonic boom. McCampbell's proposed solution of a microwave plasma parting the air in front of the craft is currently being researched by Dr. Leik Myrabo, Professor of Engineering Physics at the Rensselaer Polytechnic Institute as a possible advance in hypersonic flight.[60] In contrast, Hill and Oberth believed UFOs utilize an as yet unknown anti-gravity field to accomplish the same thing as well as provide propulsion and protection of occupants from the effects of high acceleration.

UFO categorization

Some researchers recommend that observations be classified according to the features of the phenomenon or object that are reported or recorded. Typical categories include:

• Saucer, toy-top, or disk-shaped "craft" without visible or audible propulsion. (day and night)
• Large triangular "craft" or triangular light pattern, usually reported at night.
• Cigar-shaped "craft" with lighted windows (Meteor fireballs are sometimes reported this way, but are very different phenomena).
• Other: chevrons, (equilateral) triangles, crescent, boomerangs, spheres (usually reported to be shining, glowing at night), domes, diamonds, shapeless black masses, eggs, pyramids and cylinders, classic "lights".

Popular UFO classification systems include the Hynek system, created by J. Allen Hynek, and the Vallée system, created by Jacques Vallée.

Hynek's system involves dividing the sighted object by appearance, subdivided further into the type of "close encounter" (a term from which the film director Steven Spielberg derived the title of his UFO movie, "Close Encounters of the Third Kind").

Jacques Vallée's system classifies UFOs into five broad types, each with from three to five subtypes that vary according to type.

Conspiracy theories

Main article: UFO conspiracy theory

UFOs are sometimes an element of elaborate conspiracy theories in which governments are said to be intentionally covering up the existence of aliens, or sometimes collaborating with them. There are many versions of this story; some are exclusive, while others overlap with various other conspiracy theories.

In the U.S., opinion polls again indicate that a strong majority of people believe the U.S. government is withholding such information.[61][62] Various notables have also expressed such views. Some examples are astronauts Gordon Cooper and Edgar Mitchell, Senator Barry Goldwater, Vice Admiral Roscoe H. Hillenkoetter (the first CIA director), Lord Hill-Norton (former British Chief of Defense Staff and NATO head), the 1999 high-level French COMETA report by various French generals and aerospace experts, and Yves Sillard (former director of the French space agency CNES, new director of French UFO research organization GEIPAN).[63]

There is also speculation that UFO phenomena are tests of experimental aircraft or advanced weapons.[citation needed] In this case UFOs are viewed as failures to retain secrecy, or deliberate attempts at misinformation: to deride the phenomenon so that it can be pursued unhindered. This explanation may or may not feed back into the previous one, where current advanced military technology is considered to be adapted alien technology (see also: skunk works and Area 51).[citation needed]

It has also been suggested by a few paranormal authors that all or most human technology and culture is based on extraterrestrial contact. See also ancient astronauts.

Allegations of evidence suppression

Some also contend regarding physical evidence that it exists abundantly but is swiftly and sometimes clumsily suppressed by governments, aiming to insulate a population they regard as unprepared for the social, theological, and security implications of such evidence. See the Brookings Report.

There have been allegations of suppression of UFO related evidence for many decades. There are also conspiracy theories which claim that physical evidence might have been removed and/or destroyed/suppressed by some governments. (See also Men in Black) Some examples are:

• On July 7, 1947, William Rhodes took photos of an unusual object over Phoenix, Arizona.[64] The photos appeared in a Phoenix newspaper and a few other papers. According to documents from Project Bluebook, an Army counter-intelligence (CIC) agent and an FBI agent interviewed Rhodes on August 29 and convinced him to surrender the negatives. The CIC agent deliberately concealed his true identity, leaving Rhodes to believe both men were from the FBI. Rhodes said he wanted the negatives back, but when he turned them into the FBI the next day, he was informed he wouldn't be getting them back, though Rhodes later tried unsuccessfully.[65][66] The photos were extensively analyzed and would eventually show up in some classified Air Force UFO intelligence reports. (Randle, 34–45, full account)
• A June 27, 1950, movie of a "flying disk" over Louisville, Kentucky, taken by a Louisville Courier-Journal photographer, had the USAF Directors of counterintelligence (AFOSI) and intelligence discussing in memos how to best obtain the movie and interview the photographer without revealing Air Force interest. One memo suggested the FBI be used, then precluded the FBI getting involved. Another memo said "it would be nice if OSI could arrange to secure a copy of the film in some covert manner," but if that wasn't feasible, one of the Air Force scientists might have to negotiate directly with the newspaper.[67][68] In a recent interview, the photographer confirmed meeting with military intelligence and still having the film in his possession until then, but refused to say what happened to the film after that.[69]
• In another 1950 movie incident from Montana, Nicholas Mariana filmed some unusual aerial objects and eventually turned the film over to the U.S. Air Force, but insisted that the first part of the film, clearly showing the objects as spinning discs, had been removed when it was returned to him. (Clark, 398)
• During the military investigation of green fireballs in New Mexico, UFOs were photographed by a tracking camera over White Sands Proving Grounds on April 27, 1949. The final report in 1951 on the green fireball investigation claimed there was insufficient data to determine anything. However, documents later uncovered by Dr. Bruce Maccabee indicate that triangulation was accomplished. The data reduction and photographs showed four objects about 30 feet in diameter flying in formation at high speed at an altitude of about 30 miles. Maccabee says this result was apparently suppressed from the final report.[70]
• Project Blue Book director Edward J. Ruppelt reported that, in 1952, a U.S. Air Force pilot fired his jet's machine guns at a UFO, and that the official report which should have been sent to Blue Book was quashed.[71]
• Astronaut Gordon Cooper reported suppression of a flying saucer movie filmed in high clarity by two Edwards AFB range photographers on May 3, 1957. Cooper said he viewed developed negatives of the object, clearly showing a dish-like object with a dome on top and something like holes or ports in the dome. The photographers and another witness, when later interviewed by Dr. James McDonald, confirmed the story. Cooper said military authorities then picked up the film and neither he nor the photographers ever heard what happened to it. The incident was also reported in a few newspapers, such as the Los Angeles Times. The official explanation, however, was that the photographers had filmed a weather balloon distorted by hot desert air.[72]
• On January 22, 1958, when NICAP director Donald Keyhoe appeared on CBS television, his statements on UFOs were pre-censored by the Air Force. During the show when Keyhoe tried to depart from the censored script to "reveal something that has never been disclosed before," CBS cut the sound, later stating Keyhoe was about to violate "predetermined security standards" and about to say something he wasn't "authorized to release." What Keyhoe was about to reveal were four publicly unknown military studies concluding UFOs were interplanetary (including the 1948 Project Sign Estimate of the Situation and Blue Book's 1952 engineering analysis of UFO motion). (Good, 286–287; Dolan 293–295)
• Astronomer Jacques Vallee reported that in 1961 he witnessed the destruction of the tracking tapes of unknown objects orbiting the Earth. (However, Vallee indicated that this didn't happen because of government pressure but because the senior astronomers involved didn't want to deal with the implications.)
• In 1965, Rex Heflin took four Polaroid photos of a hat-shaped object. Two years later (1967), two men posing as NORAD agents confiscated three prints. Just as mysteriously, the photos were returned to his mailbox in 1993.[73]
• A March 1, 1967 memo directed to all USAF divisions, from USAF Lt. General Hewitt Wheless, Assistant Vice Chief of Staff, stated that unverified information indicated that unknown individuals, impersonating USAF officers and other military personnel, had been harassing civilian UFO witnesses, warning them not to talk, and also confiscating film, referring specifically to the Heflin incident. AFOSI was to be notified if any personnel were to become aware of any other incidents. (Document in Fawcett & Greenwood, 236).
• John Callahan, former Division Chief of the Accidents and Investigations Branch of the FAA, Washington D.C., also a Disclosure Project witness, said that following a 1986 encounter of a Japanese airlines 747 with a giant UFO over Alaska, recorded by air and ground radar, the FAA conducted an investigation. Callahan held a briefing a few days later for President Reagan's Scientific Study Group, the FBI, and CIA. After the briefing, one of the CIA agents told everybody they "were never there and this never happened," adding they were fearful of public panic.[74]
• In 1996, the CIA revealed an instance from 1964 where two CIA agents posed as USAF representatives in order to recover a film canister from a Corona spy satellite that had accidentally come down in Venezuela. The event was then publicly dismissed as an unsuccessful NASA space experiment.

Famous hoaxes

• The Maury Island Incident
• The Ummo affair, a decades-long series of detailed letters and documents allegedly from extraterrestrials. The total length of the documents is at least 1000 pages, and some estimate that further undiscovered documents may total nearly 4000 pages. A Jose Luis Jordan Pena came forward in the early nineties claiming responsibility for the phenomenon, and most[who?] consider there to be little reason to challenge his claims.[75]
• George Adamski over the space of two decades made various claims about his meetings with telepathic aliens from nearby planets. He claimed that photographs of the far side of the moon taken by a Soviet orbital probe in 1959 were fake, and that there were cities, trees and snow-capped mountains on the far side of the moon.
• In 1987/1988 Ed Walters allegedly perpetrated a hoax in Gulf Breeze, Florida. Walters claimed at first having seen a small UFO flying near his home, and then in a second incident seeing the same UFO and a small alien being standing by his back door after being alerted by his dog. Several photographs were taken of the craft, but none of the being. Three years later, in 1990, after the Walters family had moved, the new residents discovered a model of a UFO poorly hidden in the attic that bore an undeniable resemblance to the craft in Walters' photographs. Various witnesses and detractors came forward after the local Pensacola newspaper printed a story about the discovered model, and some investigators[who?] now consider the sightings to be a hoax. In addition, a six-figure television miniseries and book deal were nearly struck with Walters.
• Warren William (Billy) Smith, A popular writer and confessed hoaxster.[76]

Not all Ufologists who have studied some these cases agree they are hoaxes. One notable example, Naval optical physicist Dr. Bruce Maccabee extensively investigated the Ed Walters Gulf Breeze case, analyzed the various photos and videos, and deemed them authentic. In fact, some of the details would have required extensive expertise to fake. [77] Maccabee also noted there were many independent witnesses to some of the Gulf Breeze sightings besides Walters, including Maccabee himself. [78]

UFOs in popular culture

Main article: UFOs in Fiction

UFOs constitute a widespread international cultural phenomenon of the last half-century. Gallup polls rank UFOs near the top of lists for subjects of widespread recognition. In 1973, a survey found that 95 percent of the public reported having heard of UFOs, whereas only 92 percent had heard of US President Gerald Ford in a 1977 poll taken just nine months after he left the White House. (Bullard, 141) A 1996 Gallup poll reported that 71 percent of the United States population believed that the government was covering up information regarding UFOs. A 2002 Roper poll for the Sci Fi channel found similar results, but with more people believing UFOs were extraterrestrial craft. In that latest poll, 56 percent thought UFOs were real craft and 48 percent that aliens had visited the Earth. Again, about 70 percent felt the government was not sharing everything it knew about UFOs or extraterrestrial life.[79][80][81] Another effect of the flying saucer type of UFO sightings has been Earth-made flying saucer craft in space fiction, for example the Earth-made craft Starship C-57D in Forbidden Planet, and the saucer part of the USS Enterprise in Star Trek And many others. For an excellent analysis of the interrelationship between popular culture and UFOs consult the research by psychologist Armando Simon, especially his contribution in Richard Haines' book, UFO Phenomena and the Behavioral Scientist.