UFO Decoder

Shapes

Disc

35 cases where witnesses described a disc, from 1457 BC to 2026.

1457 BC

The Tulli Papyrus

In 1953 Tiffany Thayer's Fortean magazine Doubt published what it called a translation of an Egyptian papyrus found among the papers of Alberto Tulli, a former director…

Fabricated (admitted)Vatican Museums (1968): 'not propriety of Vatican Museum ... no more…
100 BC

Pliny's Burning Shield, 100 BC

In Book II of his Natural History, written around AD 77, Pliny the Elder includes a short chapter on 'burning shields' (clipei ardentes) among the wonders of the sky. His…

DocumentedNo investigation (classed by Pliny among celestial portents)
91 BC

Julius Obsequens' Book of Prodigies: Shields, Armies and a Golden Globe

Julius Obsequens, a Roman writer of the late 4th or early 5th century AD, compiled a year-by-year catalogue of the portents reported to the Roman state between 249 and 12…

DocumentedRoman state prodigies (ritually expiated); no investigation
776

Flaming Shields over Sigiburg, 776

The Royal Frankish Annals, the semi-official chronicle of Charlemagne's court, describe a sky event at the hilltop fortress of Sigiburg in 776, during the Saxon wars…

DocumentedFrankish court chronicle: a sign of God's power; no investigation
1290

Byland Abbey 'Silver Disc', 1290

One of the most widely repeated 'medieval UFO' reports. In 1953 a letter to The Times of London claimed that a Latin manuscript recently found at Ampleforth Abbey…

Fabricated (admitted)Fabricated: Ampleforth College confirmed it was a letter written by…
1917

Miracle of the Sun, Fátima, 1917

Through 1917, three shepherd children near the Portuguese village of Fátima, Lúcia dos Santos and her cousins Francisco and Jacinta Marto, said a radiant lady was…

UnresolvedDiocese of Leiria canonical inquiry (1922-1929); Bishop José Alves…
1947

Roswell, New Mexico

In June 1947 ranch foreman Mac Brazel found a field near Corona strewn with foil, rubber, tape and light sticks. After hearing about the new 'flying disc' craze, he…

IdentifiedUS Air Force (1994): debris most likely from a Project Mogul balloon…
1947

Kenneth Arnold, Mount Rainier

Flying his small CallAir plane from Chehalis toward Yakima, Idaho businessman Kenneth Arnold broke off a search for a missing Marine transport when a sharp flash caught…

UnresolvedArmy Air Forces: mirage (formal public conclusion, 1947)
1947

The Twining Memo: 'Something Real'

Three months into the 1947 wave of flying disc reports, Army Air Forces intelligence asked Air Materiel Command at Wright Field for its considered view. The reply, signed…

DocumentedAir Materiel Command opinion: the phenomenon is 'something real and…
1950

Farmington 'Saucer Armada', New Mexico

On the morning of 17 March 1950 traffic slowed on Farmington's Main Street as crowds stood pointing at the sky. For about an hour, the Farmington Daily Times reported…

UnresolvedNo formal Air Force explanation issued in 1950 ('nothing to it')…
1950

McMinnville (Trent) Photographs, Oregon

Evelyn Trent was feeding rabbits behind the family farmhouse outside Sheridan, Oregon, when she saw a silvery, metallic-looking disc gliding slowly toward the farm. She…

DisputedCondon Committee (1969, W. K. Hartmann): consistent with an…
1950

Great Falls (Mariana) Film, Montana

Checking the wind before an afternoon game at Great Falls' empty Legion Stadium, baseball manager Nick Mariana saw a flash and then two bright, silvery objects moving…

UnresolvedProject Grudge (1950): reflections from two F-94 jets; Blue Book…
1952

Tremonton Film, Utah

Driving north from Tremonton, Utah, on 2 July 1952 with his family, Navy Warrant Officer Delbert Newhouse, a veteran aerial photographer with more than a thousand hours…

DisputedWright Field photo lab (1952): not airplanes or balloons, probably not…
1955

Kelly–Hopkinsville Encounter, Kentucky

Around 7 pm on a hot Sunday, visitor Billy Ray Taylor came in from the well at the Sutton family's rural farmhouse near Kelly, Kentucky, saying he had seen a shining…

DisputedProject Blue Book: listed as fabricated (the file's own term), with no…
1957

Ubatuba Magnesium Fragments

In mid-September 1957 the Rio de Janeiro society columnist Ibrahim Sued opened an envelope holding a letter and three small chips of grey metal. The writer, whose…

DisputedColorado UFO Project (Condon Report), Case 4: composition earthly…
1958

Trindade Island Photographs, Brazil

In January 1958 the Brazilian Navy training ship Almirante Saldanha was at remote Trindade Island, some 1,100 km off Brazil, supporting International Geophysical Year…

DisputedBrazilian Navy report (1958): no sign of montage on the negatives…
1959

Father Gill, Boianai, Papua

Rev. William Gill, an Australian Anglican priest running the mission at Boianai in what was then the Territory of Papua, had written to a colleague on 26 June 1959 that…

DisputedRoyal Australian Air Force (Sqn Ldr F. A. Lang, December 1959): Gill a…
1961

Betty and Barney Hill

Driving home to Portsmouth from a holiday in Niagara Falls and Montreal, Betty and Barney Hill noticed a bright point of light that seemed to shadow their car down U.S…

DisputedBlue Book: Insufficient Data (file notes the light was 'in all…
1966

Wanaque Reservoir, New Jersey

On the evening of 11 January 1966 the police radio in Wanaque, a Ramapo Mountains town around the Newark water supply reservoir, was flooded with about 30 calls from…

DisputedBlue Book: no formal case; an in-office review of the second-hand…
1966

Tully Saucer Nest, Queensland

On a clear, hot morning, banana grower George Pedley was driving a tractor past Horseshoe Lagoon on Albert Pennisi's cane farm near Tully, in far north Queensland, when…

DisputedRAAF / Department of Air: no explanation for the object; nests…
1966

The Ummo Affair, Spain

On 6 February 1966 a Madrid man named José Luis Jordán Peña reported seeing a huge circular craft on three legs, its underside marked with a strange emblem: three…

Fabricated (admitted)Fabricated: José Luis Jordán Peña publicly claimed authorship (1993)…
1966

Westall School, Melbourne

During morning break on Wednesday 6 April 1966, students on the oval at Westall High School in Melbourne's southeastern suburbs began shouting and pointing at a silvery…

UnresolvedNo public official finding; RAAF personnel reportedly visited the site…
1966

Portage County Police Chase, Ohio

Before dawn on 17 April 1966, Portage County deputy Dale Spaur and auxiliary officer Wilbur 'Barney' Neff stopped to check an abandoned car on Route 224 near Ravenna…

DisputedBlue Book: Satellite, then Astronomical (Venus)
1967

Falcon Lake (Stefan Michalak)

Stefan Michalak, a Winnipeg industrial mechanic prospecting for quartz and silver in the Precambrian rock near Falcon Lake, said a clatter of geese made him look up to…

DisputedRCMP / RCAF / Department of National Defence: no finding released…
1974

Langenburg Rings, Saskatchewan

Edwin Fuhr, 36, was swathing his rapeseed (canola) field north of Langenburg on a Sunday morning when he noticed something sitting just above the grass near a slough: a…

UnresolvedRCMP report: five circles matching the witness's description, no…
1975

Kōfu Encounter, Japan

Two seven-year-old cousins were roller-skating near their housing estate in Kōfu at dusk when two glowing orange objects appeared overhead. Frightened when the lights…

DisputedNo official investigation; local field survey with the Yamanashi…
1975

Travis Walton Disappearance

At dusk on 5 November 1975 a seven-man thinning crew was driving out of the Turkey Springs contract area when, they said, they rounded a bend and saw a glowing…

DisputedNavajo County Sheriff's missing-person investigation; Arizona DPS…
1981

Trans-en-Provence Landing Trace

Late on the afternoon of 8 January 1981, Renato Nicolaï was building a small concrete shelter for a water pump behind his house outside Trans-en-Provence when a faint…

UnresolvedGEPAN/GEIPAN (CNES): unexplained after investigation; listed as a…
1987

Gulf Breeze Photographs

In November 1987 the weekly Gulf Breeze Sentinel printed Polaroid photographs of a glowing, many-windowed craft with a bright ring on its underside hovering over a quiet…

DisputedNo government investigation; Eglin AFB reported no unusual activity or…
1987

Ilkley Moor Photograph

Early on a foggy December morning, a retired police officer who later went by the name Philip Spencer set out across Ilkley Moor to visit his father-in-law, carrying a…

DisputedNo official investigation; examined privately by researchers Peter…
1994

Ariel School, Ruwa

During the mid-morning break on 16 September 1994, pupils at Ariel School, a private primary school near Ruwa about 22 km south-east of Harare, said one or more silvery…

DisputedNo official investigation
2006

O'Hare Airport Sighting

During the late-afternoon rush on 7 November 2006, a United Airlines ramp worker pushing back Flight 446 to Charlotte spotted a dark, metallic-looking disc hovering low…

UnresolvedFAA: a "weather phenomenon"; no investigation because nothing was seen…
2010

El Bosque Air Base Video, Chile

During the change-of-command ceremony for the Chilean Air Force commander at El Bosque Air Base in Santiago in November 2010, crowds filmed the acrobatic team and fighter…

DisputedCEFAA: unidentified object moving at very high speed (figures quoted…
2014

USS Theodore Roosevelt Encounters (Gimbal and GoFast)

From 2014 into 2015, Navy fighter crews flying from the aircraft carrier USS Theodore Roosevelt off the US East Coast reported repeatedly picking up unknown objects on…

UnresolvedUS Department of Defense (2020): "remain characterized as…
2026

PURSUE: the Pentagon's first UAP file releases

On 8 May 2026 the Department of War launched WAR.GOV/UFO and published the first tranche of files under the Presidential Unsealing and Reporting System for UAP…

UnresolvedDepartment of War / AARO: unresolved cases, released without analytic…

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