Kenneth Arnold

Kenneth Arnold

Infobox Person
name = Kenneth A. Arnold

image_size = 175px
caption = Showing a drawing of the crescent-shaped object
birth_date = birth date|1915|03|29
birth_place = Sebeka, Minnesota
death_date = death date and age|1984|01|16|1915|03|29
death_place = Bellevue, Washington
occupation = businessman, aviator
spouse =
parents =
children =

Kenneth A. Arnold (born March 29, 1915 in Sebeka, Minnesota; died January 16 1984 in Bellevue, Washington) was an American businessman and pilot.

He is best-known for making what is generally considered the first widely reported unidentified flying object sighting in the United States, after claiming to see nine unusual objects flying in a chain near Mount Rainier, Washington on June 24, 1947. Arnold described the objects' shape as resembling a flat saucer or disc (Publicity and origins of term "flying saucer"">see quotes below), and also described their erratic motion as resembling a saucer skipped across water; from this, the press quickly coining the new terms "flying saucer" and "flying disc" to describe such objects, many of which were reported within days after Arnold's sighting. Later Arnold would add that one of the objects resembled a crescent or flying wing.

The U.S. Air Force formally listed the Arnold case as a mirage; this is one of many explanations that have been rebutted by critics, and researchers Jerome Clark [Jerome Clark, "The UFO Book: Encyclopedia of the Extraterrestrial". Visible Ink, 1998. ISBN 1-57859-029-9] and Ronald Story [Story, Ronald, editor, "The Encyclopedia of UFOs", Garden City: Doubleday & Company, Inc, 1980, ISBN 0-385-13677-3] both argue that there has never been an entirely persuasive conventional explanation of the Arnold sighting.


Arnold was born in Sebeka, Minnesota, but grew up in Scobey, Montana. He attended the University of Minnesota. Arnold began Great Western Fire Control Supply in Boise, Idaho in 1940, a company that sold and installed fire suppression systems, a job that took him around the Pacific Northwest.

Arnold was regarded as a skilled and experienced pilot, with over 9,000 total flying hours, almost half of which were devoted to Search and Rescue Mercy Flyer efforts. [Diana Palmer Hoyt, "UFOCRITIQUE: UFO's, Social Intelligence and the Condon Committee"; Master's Thesis, Virginia Polytechnic Institute, 2000; [ read it online] ]

He was an avid swimmer and diver -- and good enough at the latter to try out for the U.S. Diving team. Arnold and his wife Doris had four daughters.

On June 24, 1947, while flying near Mt. Rainer, Arnold claimed to have seen nine unusual objects flying in the skies; this event is discussed in more detail below. He claimed to have seen UFOs on several other occasions afterwards, as well.

After the 1947 UFO sighting, Arnold became a minor celebrity, and for about a decade thereafter, he was somewhat involved in interviewing other UFO witnesses or contactees (notably, he investigated the claims of Samuel Eaton Thompson, one of the first contactees). Arnold wrote a book and several magazine articles about his UFO sighting and his subsequent research.

By the 1960s, Arnold had little to do with UFOs. He appearead at a 1977 convention currated by "Fate" to mark the thirtieth anniversary of the "birth" of the modern UFO age. He ran unsuccessfully for Lieutenant Governor of Idaho in 1962.

Arnold died in 1984.

June 24, 1947 UFO sighting

On June 24, 1947, Arnold was flying from Chehalis, Washington to Yakima, Washington in a CallAir A-2 on a business trip. He made a brief detour after learning of a $5000 reward for the discovery of a U.S. Marine Corps C-46 transport airplane that had crashed near Mt. Rainer. The skies were completely clear and there was a mild wind.

A few minutes before 3:00 p.m. at about 9,200 feet in altitude and near Mineral, Washington, he gave up his search and started heading eastward towards Yakima. He saw a bright flashing light, similar to sunlight reflecting from a mirror. Afraid he might be dangerously close to another aircraft, Arnold scanned the skies around him, but all he could see was a DC-4 to his left and back of him, about 15 miles away.

About 30 seconds after seeing the first flash of light, Arnold saw a series of bright flashes in the distance off to his left, or north of Mt. Rainier, which was then 20 to 25 miles away. He thought they might be reflections on his airplane's windows, but a few quick tests (rocking his airplane from side to side, removing his eyeglasses, later rolling down his side window) ruled this out.

They flew in a long chain, and Arnold for a moment considered they might be a flock of geese, but quickly ruled this out for a number of reasons, including the altitude, bright glint, and obviously very fast speed. He then thought they might be a new type of jet and started looking intently for a tail and was surprised that he couldn't find any.

They quickly approached Rainier and then passed in front, usually appearing dark in profile against the bright white snowfield covering Rainier, but occasionally still giving off bright light flashes as they flipped around erratically. Sometimes he said he could see them on edge, when they seemed so thin and flat they were practically invisible. According to Clark [Clark, 1998] Arnold said that one of the objects was rather crescent shaped, while the other eight objects were more circular, but initially Arnold's descriptions were only of the latter disk-like shape.

At one point Arnold said they flew behind a subpeak of Rainier and briefly disappeared. Knowing his position and the position of the (unspecified) subpeak, Arnold placed their distance as they flew past Rainier at about 23 miles.

Using a Zeus cowling fastener as a gauge to compare the nine objects to the distant DC-4, Arnold estimated their angular size as slightly smaller than the DC-4, about the width between the outer engines (about 60 feet). Arnold also said he realized that the objects would have to be quite large to see any details at that distance and later, after comparing notes with a United Airlines crew that had a similar sighting 10 days later (see below), placed the absolute size as larger than a DC-4 airliner (or greater than 100 feet in length). Army Air Force analysts would later estimate 140 to 280 feet, based on analysis of human visual acuity and other sighting details (such as estimated distance). Arnold said the objects were grouped together, as Ted Bloecher [ [ The UFO Wave of 1947] by Ted Bloecher, 1967; URL accessed March 7, 2007] writes, "in a diagonally stepped-down, echelon formation, stretched out over a distance that he later calculated to be five miles". Though moving on a more or less level horizontal plane, Arnold said the objects weaved from side to side ("like the tail of a Chinese kite" as he later stated), darting through the valleys and around the smaller mountain peaks. They would occasionally flip or bank on their edges in unison as they turned or maneuvered causing almost blindingly bright or mirror-like flashes of light. The encounter gave him an "eerie feeling", but Arnold suspected he had seen test flights of a new U.S. military aircraft.

As the objects passed Mt Rainer, Arnold turned his plane southward on a more or less parallel course. It was at this point that he opened his side window and began observing the objects unobstructed by any glass that might have produced reflections. The objects did not disappear and continued to move very rapidly southward, continuously moving forward of his position. Curious about their speed, he began to time their rate of passage: he said they moved from Mt. Rainer to Mt. Adams where they faded from view, a distance of about 50 miles, in one minute and forty-two seconds, according to the clock on his instrument panel. When he later had time to do the calculation, the speed was over 1,700 miles per hour. This was about three times faster than any manned aircraft in 1947. Not knowing exactly the distance where the objects faded from view, Arnold conservatively and arbitrarily rounded this down to 1200 miles an hour, still faster than any known aircraft, which had yet to break the sound barrier. It was this supersonic speed in addition to the unusual saucer or disk description that seemed to capture people's attention.

Arnold shares the story

Arnold landed in Yakima at about 4.00 p.m., and quickly told friend and airport general manager Al Baxter the amazing story, and before long, the entire airport staff knew of Arnold's claims. He discussed the story with the staff, and later wrote that Baxter didn't believe him. Arnold flew on to an air show Pendleton, Oregon, not knowing that somebody in Yakima had phoned in ahead to say that Arnold had seen some strange new aircraft. It was at this time that Arnold studied his maps, determined the distance between Mt. Rainier and Mt. Adams, and calculated the rather astonishing speed. He told a number of pilot friends, and wrote in his account to AAF intelligence that they did not scoff or laugh. Instead they suggested that maybe he had seen guided missiles or something new, though Arnold felt this explanation to be inadequate. He also wrote that some former Army pilots told him that they had been briefed before going into combat "that they might see objects of similar shape and design as I described and assured me that I wasn't dreaming or going crazy." (see Foo fighter)

Arnold wasn't interviewed by reporters until the next day (June 25) when he went to the office of the "East Oregonian" in Pendleton. Any skepticism the reporters might have harbored evaporated when they interviewed Arnold at length; as historian Mike Dash [Dash, Mike, "Borderlands: The Ultimate Exploration of the Unknown"; Woodstock: Overlook Press, 2000; ISBN 0-87951-724-7]

:Arnold had the makings of a reliable witness. He was a respected businessman and experienced pilot ... and seemed to be neither exaggerating what he had seen, nor adding sensational details to his report. He also gave the impression of being a careful observer ... These details impressed the newspapermen who interviewed him and lent credibility to his report.

Arnold would soon complain about the effects of the publicity on his life. On June 28 he was reported saying, "I haven't had a moment of peace since I first told the story." He then said a preacher had called and told him that the objects he saw were "harbingers of doomsday" and that the preacher was preparing his congregation "for the end of the world." But that wasn't half as bad as an encounter he had with a woman in a Pendleton cafe who looked at him and dashed out shrieking, "There's the man who saw the men from Mars." She ran out "sobbing she would have to do something for the children" Arnold was reported saying "with a shudder".

He then added that, "This whole thing has gotten out of hand. I want to talk to the FBI or someone. Half the people look at me as a combination of Einstein, Flash Gordon and screwball. I wonder what my wife back in Idaho thinks." [ Bremerton (Washington) "Sun", June 28, 1947, p. 1 ]


Arnold's sighting was partly corroborated by a prospector named Fred Johnson on Mt. Adams, who wrote AAF intelligence that he saw six of the objects on June 24 at about the same time as Arnold, which he viewed through a small telescope. He said they were "round" and tapered "sharply to a point in the head and in an oval shape." He also noted that the objects seemed to disturb his compass. An evaluation of the witness by AAF intelligence found him to be credible. Ironically, Johnson's report was listed as the first unexplained UFO report in Air Force files, while Arnold's was dismissed as a mirage, yet Johnson seemed to be describing a continuation of the same event as Arnold.

The Portland Oregon "Journal" reported on July 4 receiving a letter from an L. G. Bernier of Richland, Washington (about 110 miles east of Mt. Adams and 140 miles southeast of Mt. Rainier). Bernier wrote that he saw three of the strange objects over Richland flying "almost edgewise" toward Mt. Rainier about one half hour before Arnold. Bernier thought the three were part of a larger formation. He indicated they were traveling at high speed: "I have seen a P-38 appear seemingly on one horizon and then gone to the opposite horizon in no time at all, but these disks certainly were traveling faster than any P-38. [Maximum speed of a P-38 was about 440 miles an hour.] No doubt Mr. Arnold saw them just a few minutes or seconds later, according to their speed." [ "Oregon Journal", Portland, July 4, 1947, p. 2 ] The previous day, Bernier had also spoken to his local newspaper, the Richland Washington "Villager", and was among the first witnesses to suggest extraterrestrial origins: "I believe it may be a visitor from another planet." [ Michael D. Hall & Wendy A. Connors, "Alfred Loedding & the Great Saucer Wave of 1947", [ online] , p. 27 ]

About 60 miles west-northwest of Richland in Yakima, Washington, Mrs. Ethel Wheelhouse likewise reported sighting several flying discs moving at fantastic speeds at around the same time as Arnold's sighting. [ Hall & Connors, 27 ]

When military intelligence began investigating Arnold's sighting in early July (see below), they found yet another witness from the area. A member of the Washington State forest service, who had been on fire watch at a tower in Diamond Gap, about 20 miles south of Yakima, reported seeing "flashes" at 3:00 p.m. on the 24th over Mount Rainier (or the exact same time as Arnold's sighting), that appeared to move in a straight line. Similarly, at 3:00 p.m. Sidney B. Gallagher in Washington State (exact position unspecified) reported seeing nine shiny discs flash by to the north. [ Hall & Connors, 27-28 ]

A Seattle newspaper also mentioned a woman near Tacoma who said she saw a chain of nine, bright objects flying at high speed near Mt. Rainier. Unfortunately this short news item wasn't precise as to time or date, but indicated it was around the same date as Arnold's sighting.

However, a pilot of a DC-4 some 10 to 15 miles north of Arnold en route to Seattle reported seeing nothing unusual. (This was the same DC-4 seen by Arnold and which he used for size comparison.)

Other Seattle area newspapers also reported other sightings of flashing, rapidly moving unknown objects on the same day, but not the same time, as Arnold's sighting. Most of these sightings were over Seattle or west of Seattle in the town of Bremerton, either that morning or at night. [ Seattle "Daily Times", June 27, 1947, p. 1; Bremerton "Sun", June 28, 1947, p. 1 ] Altogether, there were at least 16 other reported UFO sightings the same day as Arnold's in the Washington state area. [] [ table of Washington state sightings]

The primary corroborative sighting, however, occurred ten days later (July 4) when a United Airlines crew over Idaho en route to Seattle also spotted five to nine disk-like objects that paced their plane for 10 to 15 minutes before suddenly disappearing. The next day in Seattle, Arnold met with the pilot, Cpt. E. J. Smith, and copilot and compared sighting details. The main difference in shape was that the United crew thought the objects appeared rough on top. This was one of the few sightings that Arnold felt was reliable, most of the rest he thought were the public seeing other things and letting their imaginations run wild. Arnold and Cpt. Smith became friends, met again with Army Air Force intelligence officers on July 12 and filed sighting reports, then teamed up again at the end of July in investigating the strange Maury Island incident.

A similar sighting of eight objects also occurred over Tulsa, Oklahoma on July 12, 1947. In this instance, a photo was taken and published in the Tulsa "Daily World" the following day (photo at right). Interestingly, the photographer, Enlo Gilmore, said that in blowups of the photo, the objects resembled baseball catcher's mitts or flying wings. He was of the opinion that the military had a secret fleet of flying wing airplanes. He had been a gunnery officer in the Navy during the war, and using information from another witness, also a veteran, he performed a triangulation and arrived at an estimation of speed of 1700 miles per hour, or essentially the same estimate as Arnold's. One of the objects, he said, seemed to have a hole in the middle. []

Two or three photos of a similar, solitary object were taken by William Rhodes over Phoenix, Arizona on July 7, 1947, and appeared in a local Phoenix newspaper and some other newspapers. The object was rounded in front with a crescent back. These photos also seem to show something resembling a hole in the middle, though Rhodes thought it was a canopy. [] Rhode's negatives and prints were later confiscated by the FBI and military. However, the photos show up in later Air Force intelligence reports. []

Arnold was soon shown the Rhode's photos when he met with two AAF intelligence officers. He commented, "It was a disk almost identical to the one peculiar flying saucer that had been worrying me since my original observation—the one that looked different from the rest and that I had never mentioned to anyone." As a result, Arnold felt that the Rhode's photos were genuine.

Publicity and origins of term "flying saucer"

Arnold's account was first featured in a few late newspaper editions on June 25, appeared in numerous U.S. and Canadian papers (and some foreign newspapers) on June 26 and thereafter, often on the front page. Without exception, according to Bloecher, the Arnold story was initially related with a serious, even-handed tone. The first reporters to interview Arnold were Nolan Skiff and Bill Bequette of the "East Oregonian" in Pendleton, Ore. on June 25, and the first story on the Arnold sighting, written by Bequette, appeared in the newspaper the same day.

Starting June 27, newspapers first began using the terms "flying saucer" and "flying disk" to describe the sighted objects. Thus the Arnold sighting is credited with giving rise to these popular terms. The actual origin of the terms is somewhat controversial and complicated. Jerome Clark cites a 1970 study by Herbert Strentz, who reviewed U.S. newspaper accounts of the Arnold UFO sighting, and concluded that the term was probably due to an editor or headline writer: the body of the early Arnold news stories did not use the term "flying saucer" or "flying disc." However, earlier stories did in fact credit Arnold with using terms such as "saucer", "disk", and "pie-pan" in describing the shape. (see quotes further below)

Years later, Arnold claimed he told Bill Bequette that "they flew erratic, like a saucer if you skip it across the water." Arnold felt that he had been misquoted since the description referred to the objects' motion rather than their shape. Thus Bequette has often been credited with first using "flying saucer" and supposedly misquoting Arnold, but the term does not appear in Bequette's early articles. Instead, his first article of June 25 says only, "He said he sighted nine saucer-like aircraft flying in formation..."

The next day in a much more detailed article, Bequette wrote, "He clung to his story of shiny, flat objects racing over the Cascade mountains with a peculiar weaving motion ‘like the tail of a Chinese kite.' ...He also described the objects as 'saucer-like' and their motion 'like fish flipping in the sun.' ... [Arnold] described the objects as 'flat like a pie-pan and somewhat bat-shaped'." It wasn't until June 28 that Bequette first used the term "flying disc" (but not "flying saucer").

A review of early newspaper stories indicates that immediately after his sighting, Arnold generally described the objects’ shape as thin and flat, rounded in the front but chopped in the back and coming to a point, i.e., more or less saucer- or disk-like. He also specifically used terms like "saucer" or "saucer-like", "disk", and "pie pan" or "pie plate" in describing the shape. The motion he generally described as weaving like the tail of a kite and erratic flipping.

For example, in a surviving recorded radio interview from June 25, Arnold described them as looking "something like a pie plate that was cut in half with a sort of a convex triangle in the rear." His motion descriptions were: "I noticed to the left of me a chain which looked to me like the tail of a Chinese kite, kind of weaving... they seemed to flip and flash in the sun, just like a mirror... they seemed to kind of weave in and out right above the mountaintops..." []

The following day (June 26) were the following quotes attributed to Arnold: []

* United Press: "They were shaped like saucers and were so thin I could barely see them..."

* Associated Press: "He said they were bright, saucer-like objects--he called them 'aircraft'. ...He also described the objects as ‘saucer-like’ and their motion 'like a fish flipping in the sun.’ ...Arnold described the objects as 'flat like a pie pan'."

* Associated Press: "They flew with a peculiar dipping motion, 'like a fish flipping in the sun,' he said. ... He said they appeared to fly almost as if fastened together -- if one dipped, the others did, too."

* "Chicago Tribune": "They were silvery and shiny and seemed to be shaped like a pie plate.... I am sure they were separate units because they weaved in flight like the tail of a kite."

On June 27 was the following quote:

* "Portland Oregon Journal": "'They were half-moon shaped, oval in front and convex in the rear. ...There were no bulges or cowlings; they looked like a big flat disk.’ ...Arnold said that the objects weaved 'like the tail of a Chinese kite'."

Two weeks later, Arnold was still referring to the shape of the objects as "saucers" or "saucer-like." In the "Portland Oregonian" on July 11, he was quoted saying, "I actually saw a type of aircraft slightly longer than it was wide, with a thickness about one twentieth as great as its width. ...I reckoned the saucers were 23 miles away."

In a written statement to Army Air Forces (AAF) intelligence the following day(July 12), Arnold several times referred to the objects as "saucer-like." At the end of the report he drew a picture of what the objects appeared to look like at their closest approach to Mt. Rainier. He wrote, "They seemed longer than wide, their thickness was about 1/20th their width." (document with Arnold's drawing at right) As to motion, Arnold wrote, "They flew like many times I have observed geese to fly in a rather diagonal chain-like line as if they were linked together. They seemed to hold a definite direction but rather swerved in and out of the high mountain peaks." He also spoke of how they would "flip and flash in the sun." [ text of written report]

To complicate the shape descriptions further, a month after his sighting, Arnold was to become involved in the bizarre Maury Island incident. Arnold was dispatched by a magazine publisher to Tacoma to investigate it, although he eventually turned the investigation over to the AAF. In a meeting with two AAF intelligence officers (the same ones who interviewed him on July 12 and for whom he wrote his report), Arnold first revealed one of the nine objects was different, being larger and shaped more like a crescent coming to a point in the back (see picture at article top). It was at this time that Arnold was also shown the Rhode's photos of a crescent-shaped object over Phoenix, which Arnold deemed authentic because of the unusual shape.

Some note the object in the drawing bears an uncanny similarity to the WW2 German design, the Horten Ho 229, sometimes further claiming it was captured German technology being tested. But there is no historical evidence of any kind supporting this.

Widespread UFO reports after Arnold sighting

In the weeks that followed Arnold's June, 1947 story, at least several hundred reports of similar sightings flooded in from the U.S. and around the world — most of which described saucer-shaped objects. A sighting by a United Airlines crew of another nine, disk-like objects over Idaho on July 4 probably garnered more newspaper coverage than Arnold's original sighting, and opened the floodgates of media coverage in the days to follow.

Bloecher collected reports of 853 flying disc sightings that year from 140 newspapers from Canada, Washington D.C, and every U.S. state save Montana. This was more UFO reports for 1947 than most researchers ever suspected. Some of these stories were poorly documented or fragmentary, but Bloecher argued that about 250 of the more detailed reports (such as those made by pilots or scientists, multiple eyewitnesses, or backed by photos) made a persuasive case for a genuine mystery.

Adding intrigue to Arnold's story, the U.S. military denied having any planes at all in the area of Mount Rainier at the time of his sighting. Likewise, on July 6, speculation arose in newspaper articles that the objects being sighted were due to either the "flying wing" or "flying flapjack," a disc-shaped aircraft, both experimental planes under development by the U.S. military at the time (see military flying saucers). The military repeated that neither aircraft could account for the sightings, which is also born out by historical records.

The most famous UFO event during this period was the Roswell UFO incident, the alleged military recovery of a crashed flying disk, the story of which broke on July 8 1947. To calm rising public concern, this and other cases were debunked by the military in succeeding days as mistaken sightings of weather balloons. []

Military investigation of Arnold story

The first investigation of Arnold's claims came from Lt. Frank Brown and Capt. William Davidson of Hamilton Field in California, who interviewed Arnold on July 12. Arnold also submitted a written report at that time. Regarding the reliability of Arnold's sighting, they concluded: [reprinted in Bloecher, 1967]

:"It is the present opinion of the interviewer that Mr. Arnold actually saw what he stated he saw. It is difficult to believe that a man of [his] character and apparent integrity would state that he saw objects and write up a report to the extent that he did if he did not see them."

Despite this, the Army Air Force's formal public conclusion was that Arnold had seen a mirage.

In addition, on July 9 AAF intelligence, with help from the FBI, secretly began an investigation of the best sightings, mostly from pilots and military personnel. Arnold's sighting, as well as that of the United Airline's crew, were included in the list of best sightings. Three weeks later they came to the conclusion that the saucer reports were not imaginary or adequately explained by natural phenomena; something real was flying around. This laid the groundwork for another intelligence estimate in September 1947 by Gen. Nathan Twining, commanding officer of the Air Materiel Command, which likewise concluded the saucers were real and urged a formal investigation by multiple government agencies. This in turn resulted in the formation of Project Sign at the end of 1947, the first publicly acknowledged USAF UFO investigation. Project Sign eventually evolved into Project Grudge, and then the better known Project Blue Book.

The personnel of the U.S. Air Force's Project Sign (1947 - 1949) also later studied Arnold's story. According to Major Edward J. Ruppelt, [Edward J. Ruppelt; "Report On Unidentified Flying Objects"; New York: Doubleday 1956]

:I found that there was a lot of speculation on this report [amongst Sign personnel] . Two factions ... joined up behind two lines of reasoning. One side said that Arnold had seen plain, everyday jet airplanes flying in formation ... The other side didn't buy this idea at all. They based their argument on the fact that Arnold knew where the objects were when he timed them ...

:There was an old theory that maybe Arnold had seen wind whipping snow along the mountain ridges, so I asked [Air Force investigators] about this. I got a flat "Impossible."

keptical explanations

One skeptical objection raised is that Arnold was suspiciously precise in his descriptions (for example, "approaching Mt. Rainier at about 107 degrees" and "passed almost directly in front of me, but at a distance of about 23 miles"), perhaps calling into question Arnold's reliability as a witness. [see Story, 1980] However, Arnold's "about" 107 degrees" was clearly not meant to be exact but an estimate, based on judging flight bearings from thousands of hours of flying experience. Arnold was also explicit from the beginning that his 23 mile distance figure was based on seeing the objects momentarily disappear behind a sub-peak of Rainier of a known distance.

Skeptic Steuart Campbell has argued that the objects Arnold reported could have been mirages of several snow-capped peaks in Cascade Range. Campbell's calculation of the objects' speed determined that they were travelling at roughly the same speed as Arnold's plane, indicating that the objects were in fact stationary. Mirages could have been caused by temperature inversions over several deep valleys in the line of sight. [ Chapter 5 ("The first flying saucers") in The UFO Mystery Solved (1994) ISBN 0952151200 ]

It is true that when Arnold had turned the plane so as to fly parallel to the apparent N-S course of the objects the relative bearing to very distant mountains would change at a much slower angular rate than the bearings to nearby peaks, i.e. as nearby landmarks fell aft of the left wing parallax would cause distant landmarks to be relatively displaced in the opposite direction. Because mirage affects visual elevation but preserves visual bearing, detached mirage images of distant peaks could appear to pace the plane. However, Arnold said that he first saw the objects crossing the nose of the plane at speed from N - S before he turned S in order to watch them through the open side canopy. Parallax does not explain this. He also said he saw the objects fly in front of Mt. Rainier; they could be seen in profile and also flashing brightly against the snowfields of Rainier. That would be impossible for mirages of mountain peaks dozens of miles away to the south.

UFO skeptic Philip J. Klass [ [ The Skeptics UFO Newsletter (SUN) #46, July 1997] URL accessed March 13, 2007] cited an article by Keay Davidson of the "San Francisco Examiner" in arguing that Arnold might have misidentified meteors on June 24, 1947.

In rebuttal, Naval physicist Bruce Maccabee pointed out a meteor theory would require impossibly slow speeds and durations for brightly glowing meteors on a horizontal trajectory. [ { Bruce Maccabee, "Another Failed Explanation for the Kenneth Arnold Sighting"] ]

James Easton [ [ RRRGroup, "Kenneth Arnold and the pelicans"] (Wednesday, April 4, 2007); URL accessed 27 June 2007] was the first of several skeptics to suggest that Arnold may have misidentified pelicans: the birds live in the Washington region, are rather large (wingspans of over three meters are not uncommon), have a pale underside that can reflect light, can fly at rather high altitudes, and can appear to have a somewhat crescent-shaped profile when flying.

Similarly, Richard Carrier recently claimed [ [ "I saw a UFO"] (Wednesday January 23, 2008); URL accessed 24 January 2008] to have seen the same UFOs as Arnold described, "ovoid objects flying in formation" "rotating along their axis of motion, like footballs, with one side black and one bright white, so they alternated in color while they spun." Then he realized it was an optical illusion and a flock of seagulls of which he misgauged the speed. He further claimed that Kenneth Arnold's account showed that Arnold was incorrectly estimating his height, believing himself level to mountains four thousand feet below him giving him erroneous estimates of the level, distance, and speed of the objects. Birds unable to meet these erroneous estimates are ruled out by the minds eye as a possible explanations for the object and aren't recognized.

Rebutting the various bird explanations, Maccabee, a PhD optical physicist, notes that it is physically impossible for a bird to be blindingly bright as reported by Arnold (which is what attracted Arnold's attention to begin with). Further, Arnold was flying in a plane going 110 miles an hour on a parallel course to the objects. Arnold reported the objects rapidly moving forward of his position as he observed them flying southward on a parallel course between Mt. Rainier and Mt. Adams. However, no bird could possibly fly faster than Arnold's plane; instead birds would have steadily moved backward, not forwards, relative to his position. [ [ Maccabee account of Arnold sighting with critique of skeptical explanations] ]

Donald Menzel's explanations

Donald Menzel was a Harvard astronomer and one of the earliest UFO debunkers. Over the years, he offered several mutually exclusive explanations for the Arnold's 1947 UFO sighting. Bruce Maccabee rebutted Menzel's explanations in a 1986 monograph, arguing that Menzel often left out data that conflicted with a given 'explanation'. [see Clark, 2005 for more details and Maccabee's website [] ]

#In 1953, Menzel argued that Arnold had seen clouds of snow blown from the mountains south of Mt. Rainier. Maccabee noted that such snow clouds have vague, hazy light, not the mirror-like brilliance reported by Arnold. Further, such clouds could not be in the rapid motion reported by Arnold, nor would they account for Arnold first seeing the bright objects north of Rainier.
#In 1963, Menzel argued that Arnold had seen orographic clouds or wave clouds; Maccabee noted that this conflicted with testimony from Arnold and others that the sky was clear, and again can't account for the brightness of the objects or their rapid motion over a very large angular region.
#In 1971, Menzel argued that Arnold had merely seen spots of water on his airplane's windows; Maccabee notes that this contradicts Arnold's testiomony that he had specifically ruled out water spots or reflections shortly after seeing the nine UFOs. For example, the early Bill Bequette article of June 26 in the "Pendleton East Oregonian" has Arnold saying he at first thought that maybe he was seeing reflections off his window, but "he still saw the objects after rolling it down."

Other sightings by Arnold and his opinion

In a 1950 interview with journalist Edward R. Murrow, Arnold reported seeing similar objects on three other occasions, and said other pilots flying in the northwestern U.S. had sighted such objects as many as eight times. The pilots initially felt a duty reporting the objects despite the ridicule, he said, because they thought the U.S. government didn't know what they were. Arnold did not assert that the objects were alien spacecraft, although he did say: "being a natural-born American, if it's not made by our science or our Army Air Forces, I am inclined to believe it's of an extraterrestrial origin." Then he added that he thought everybody should be concerned, but "I don't think it's anything for people to get hysterical about."

The first issue of "Fate" (1948) featured the article "The Truth About The Flying Saucers" by Arnold. In 1952 he described his experiences in the book "The Coming of the Saucers", which he and a publisher friend named Raymond A. Palmer published themselves.


*Clark, Jerome, "The UFO Encyclopedia: The Phenomenon from the Beginning, Volume 2, A-K", Detroit: Omnigraphics, 1998 (2nd edition, 2005), ISBN 0-7808-0097-4
* Campbell, Steuart, "The UFO Mystery Solved", Explicit Books, 1994, ISBN 0-9521512-0-0
* Obituary, "Idaho Statesman", January 22, 1984

External links

* [ Out of This World: 60 Years of Flying Saucers by Nigel Watson]
* [ The most complete Arnold sighting description and analysis on the net]
* [ Resolving Arnold part 1]
* [ Resolving Arnold part 2]
* [ Transcript of telephone conversation with Arnold] by Edward R. Murrow
* [ Some early newspaper articles on the Arnold sighting]

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  • Kenneth Arnold — Pour les articles homonymes, voir Arnold …   Wikipédia en Français

  • Kenneth Arnold — Dibujo realizado por Kenneth Arnold. Kenneth A. Arnold (29 de marzo de 1915 16 de enero de 1984) fue un piloto privado de Boise, Idaho que contempló el que está considerado como el primer avistamiento de un ovni en los Estados Unidos, a pesar de… …   Wikipedia Español

  • Kenneth — Origin Word/Name Scotland Kenneth is a given name. Contents …   Wikipedia

  • Arnold — Cette page d’homonymie répertorie les différents sujets et articles partageant un même nom. Arnold est un prénom masculin, variante alsacienne du nom de personne d origine germanique Arnould, soit une variante de Arnaud, soit le nom Arnwald (arn …   Wikipédia en Français

  • Kenneth Anger — Anger in his 1947 film Fireworks. Born Kenneth Wilbur Anglemyer February 3, 1927 (1927 02 03) (age 84) Santa Monica, California …   Wikipedia

  • Kenneth Allott — (1912 1973) was an Anglo Irish poet and academic, and authority on Matthew Arnold. LifeBorn in Glamorgan, where his father, a doctor, was serving as a locum, Allott later experienced the break up of his parents marriage, followed by the death of… …   Wikipedia

  • Arnold J. Toynbee — Arnold Joseph Toynbee Arnold J. Toynbee en 1961 Arnold Joseph Toynbee (14 avril 1889 22 octobre 1975) était un historien britannique. Son analyse en douze volumes de l essor et de la chute des civilisations, Étude de l histoire (A Study of… …   Wikipédia en Français

  • Kenneth Yablonski — (b. 1934 September 8, 2002) was an attorney with the firm of Yablonski, Costello and Leckie in Washington, Pennsylvania.Kenneth Yablonski was born in 1934 to Joseph Jock and Margaret Yablonski. Yablonski obtained a bachelor s degree from… …   Wikipedia

  • Kenneth Muir (scholar) — Kenneth Arthur Muir (May 5, 1907 ndash; September 30, 1996) was a twentieth century literary scholar and author, prominent in the fields of Shakespeare studies and English Renaissance theatre. He served as King Alfred Professor of English… …   Wikipedia

  • Arnold Clas Robert Thunberg — (* 5. April 1893 in Helsinki; † 28. April 1973 ebenda) war ein finnischer Eisschnellläufer. Werdegang Thunberg begann erst im Alter von 18 Jahren mit dem Eisschnelllauf. In der Dekade zwischen 1922 und 1932 war er einer der erfolgreichsten Läufer …   Deutsch Wikipedia

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