Sighting Sperry UFO Case Near Mount Vernon, Virginia (Potomac area, southwest of Washington, D.C.), USA 1950 evidence Contested On the night of 29 May 1950, the crew of an American Airlines DC-6 led by Capt. Willis T. Sperry reported a bright blue light that resolved into a long, submarine-like object which maneuvered around the airliner before…
Open the book On the night of 29 May 1950, the crew of an American Airlines DC-6 led by Capt. Willis T. Sperry reported a bright blue light that resolved…
Sighting Teaticket (Falmouth) Sighting Falmouth Airport, Teaticket, Massachusetts, USA 1950 evidence Contested On 5 February 1950, witnesses at Falmouth Airport on Cape Cod, including an Otis Air Force Base lieutenant, watched two illuminated cylindrical objects maneuver together, one dropping a fireball, before both climbed…
Open the book On 5 February 1950, witnesses at Falmouth Airport on Cape Cod, including an Otis Air Force Base lieutenant, watched two illuminated…
Painted illustration Trent UFO Photographs McMinnville, Oregon, USA 1950 evidence Contested Farming couple Paul and Evelyn Trent photograph a metallic disc-shaped object near McMinnville, Oregon, creating some of the most famous UFO photographs ever taken.
Open the book Farming couple Paul and Evelyn Trent photograph a metallic disc-shaped object near McMinnville, Oregon, creating some of the most famous…
Radar and visual Hanford Radar-Visual Case Hanford Atomic Plant, Richland, Washington, USA 1949 evidence Contested On May 21, 1949, a silvery disc hovering over the Hanford nuclear site was confirmed on radar and by ground observers, prompting an F-82 interception from Moses Lake that failed to locate it; Air Force files later…
Open the book On May 21, 1949, a silvery disc hovering over the Hanford nuclear site was confirmed on radar and by ground observers, prompting an F-82…
Mass sighting Mount Palomar Observatory Sighting and Geiger Counter Anomaly Mount Palomar Observatory, San Diego County, California, USA 1949 evidence Contested On 14 October 1949 staff at Mount Palomar Observatory reportedly saw a formation of 16 to 18 silver objects while a Navy Geiger counter repeatedly went off scale, an episode later filed in Project Blue Book and…
Open the book On 14 October 1949 staff at Mount Palomar Observatory reportedly saw a formation of 16 to 18 silver objects while a Navy Geiger counter…
Painted illustration Palomar Observatory Transient Discovery Palomar Observatory, California, USA 1949 evidence Documented October 2025 peer-reviewed analysis of archival Palomar Observatory photographs (1949–1957) reveals mysterious transient light events statistically correlated with nuclear weapons tests and historical UAP reports.
Open the book October 2025 peer-reviewed analysis of archival Palomar Observatory photographs (1949–1957) reveals mysterious transient light events…
Other Project Grudge Wright-Patterson Air Force Base, Dayton, Ohio, USA 1949 evidence Documented Project Grudge was the second U.S. Air Force UFO study, run from late 1948 to 1952 between Project Sign and Project Blue Book. Its August 1949 report explained the sightings as misidentified conventional phenomena, a…
Open the book Project Grudge was the second U.S. Air Force UFO study, run from late 1948 to 1952 between Project Sign and Project Blue Book. Its August…
Sighting Rogue River Incident Rogue River near Elephant Rock, Gold Beach, Oregon, USA 1949 evidence Contested On 24 May 1949 a group fishing on the Rogue River in Oregon reported a round, silver object about the size of a C-47 that made no sound and left no exhaust; an Air Force OSI inquiry could not rule out an aircraft and…
Open the book On 24 May 1949 a group fishing on the Rogue River in Oregon reported a round, silver object about the size of a C-47 that made no sound and…
Sighting White Sands Theodolite Sighting White Sands Proving Ground (near Arrey), New Mexico, USA 1949 evidence Contested On 24 April 1949 a tracking team at White Sands used a theodolite to follow a second object they computed at about 56 miles up and seven miles per second; Edward Ruppelt could not explain it, and later accounts dispute…
Open the book On 24 April 1949 a tracking team at White Sands used a theodolite to follow a second object they computed at about 56 miles up and seven…
Painted illustration Aztec, New Mexico UFO Crash Hart Canyon, near Aztec, New Mexico, USA 1948 evidence Debunked A widely publicized 1949–50 claim that a 100-foot flying saucer and 16 humanoid bodies were recovered near Aztec, New Mexico in 1948 — a story that made a bestseller of journalist Frank Scully's book before being…
Open the book A widely publicized 1949–50 claim that a 100-foot flying saucer and 16 humanoid bodies were recovered near Aztec, New Mexico in 1948 — a…
Painted illustration Chiles-Whitted Encounter Montgomery, Alabama, USA 1948 evidence Contested Two decorated Eastern Airlines pilots encounter a glowing cigar-shaped craft during flight, triggering Project Sign's classified UFO assessment.
Open the book Two decorated Eastern Airlines pilots encounter a glowing cigar-shaped craft during flight, triggering Project Sign's classified UFO…
Radar and visual Fukuoka F-61 Radar Pursuit Near Fukuoka, Kyushu, Japan 1948 evidence Documented On the night of 15 October 1948, the crew of a USAF F-61 Black Widow night fighter chased an unidentified radar target near Fukuoka, Japan; the object reportedly outran the aircraft six times and was catalogued as…
Open the book On the night of 15 October 1948, the crew of a USAF F-61 Black Widow night fighter chased an unidentified radar target near Fukuoka, Japan;…
Radar and visual Fürstenfeldbruck Radar-Visual Case Fürstenfeldbruck Air Base, Bavaria (radar on the ground about 30 miles south of Munich), Germany 1948 evidence Contested On the night of 23 November 1948, two US Air Force F-80 pilots at Fürstenfeldbruck saw a reddish light that a ground radar station tracked at 27,000 feet, later reported climbing to about 50,000 feet; the case is cited…
Open the book On the night of 23 November 1948, two US Air Force F-80 pilots at Fürstenfeldbruck saw a reddish light that a ground radar station tracked…
Painted illustration Gorman Dogfight Fargo, North Dakota, United States 1948 evidence Contested A 27-minute aerial pursuit between North Dakota Air National Guard pilot George F. Gorman and a luminous spherical object over Fargo, one of the three 'classic' UFO cases of 1948.
Open the book A 27-minute aerial pursuit between North Dakota Air National Guard pilot George F. Gorman and a luminous spherical object over Fargo, one…
Military encounter Kapustin Yar 1948 UFO Incident Kapustin Yar, USSR 1948 evidence Contested Soviet MiG fighter pilot engages and reportedly downs a silver cigar-shaped UFO above the USSR's primary missile test range; both craft crash and are recovered.
Open the book Soviet MiG fighter pilot engages and reportedly downs a silver cigar-shaped UFO above the USSR's primary missile test range; both craft…
Painted illustration Los Alamos Green Fireballs Incident Los Alamos Scientific Laboratory and surrounding area, USA 1948 evidence Documented Unexplained bright green objects sighted over Los Alamos atomic facility in late 1948 and early 1949, prompting a classified scientific conference in February 1949 attended by top Manhattan Project physicists.
Open the book Unexplained bright green objects sighted over Los Alamos atomic facility in late 1948 and early 1949, prompting a classified scientific…
Painted illustration Mantell Incident Godman Army Airfield / Franklin, Kentucky, United States 1948 evidence Documented Kentucky Air National Guard Captain Thomas Mantell died when his F-51D Mustang crashed during a high-altitude pursuit of an unidentified aerial object over central Kentucky — the first U.S. military fatality linked to a…
Open the book Kentucky Air National Guard Captain Thomas Mantell died when his F-51D Mustang crashed during a high-altitude pursuit of an unidentified…
Other Project Sign Wright Field, Dayton, Ohio, USA 1948 evidence Documented The U.S. Air Force's first formal UFO study, run from Wright Field from January 1948 to late 1948, whose contested 'Estimate of the Situation' is the earliest claimed official endorsement of the extraterrestrial…
Open the book The U.S. Air Force's first formal UFO study, run from Wright Field from January 1948 to late 1948, whose contested 'Estimate of the…
Crash and retrieval Corona Debris Field and the 'Crash at Corona' Claim Brazel ranch near Corona, Lincoln County, New Mexico, USA 1947 evidence Contested The debris that rancher W. W. 'Mac' Brazel found near Corona, New Mexico, in June–July 1947 is the same material that sparked the Roswell story; the 1994 Air Force review tied it to a classified Project Mogul balloon,…
Open the book The debris that rancher W. W. 'Mac' Brazel found near Corona, New Mexico, in June–July 1947 is the same material that sparked the Roswell…
Painted illustration Kenneth Arnold Sighting Near Mount Rainier, Cascade Range, Washington, US 1947 evidence Contested On June 24, 1947, experienced pilot Kenneth Arnold observed nine high-speed unidentified objects flying in formation near Mount Rainier — a sighting that coined the term 'flying saucer' and launched the modern UFO era.
Open the book On June 24, 1947, experienced pilot Kenneth Arnold observed nine high-speed unidentified objects flying in formation near Mount Rainier — a…
Painted illustration Maury Island Debris Incident Maury Island, Puget Sound, USA 1947 evidence Debunked Harbor patrolman Harold Dahl reported witnessing six doughnut-shaped craft ejecting debris over Puget Sound on June 21, 1947—the first major post-war UFO debris claim, predating Roswell by two weeks.
Open the book Harbor patrolman Harold Dahl reported witnessing six doughnut-shaped craft ejecting debris over Puget Sound on June 21, 1947—the first…
Mass sighting Muroc Army Air Field sightings Muroc Army Air Field (now Edwards AFB), Rogers Dry Lake, California, USA 1947 evidence Documented On 8 July 1947, several officers and engineers at the Army Air Field at Muroc, California, reported silver disc-like and oval objects over the base; sworn statements were taken and the case went to the Fourth Air Force,…
Open the book On 8 July 1947, several officers and engineers at the Army Air Field at Muroc, California, reported silver disc-like and oval objects over…
Other Project Mogul and the 1947 Roswell Debris Foster Ranch, near Roswell, New Mexico, USA 1947 evidence Documented A classified Army Air Forces balloon program whose radar-reflector trains are the leading conventional explanation for the debris recovered near Roswell in July 1947.
Open the book A classified Army Air Forces balloon program whose radar-reflector trains are the leading conventional explanation for the debris recovered…
Photograph or film Rhodes Phoenix Photographs Phoenix, Arizona, USA 1947 evidence Contested Two photographs of a disc-like object taken over Phoenix in July 1947 by amateur astronomer William Albert Rhodes became one of the most-reproduced early flying-disc images, drew an FBI and Air Force inquiry, and was…
Open the book Two photographs of a disc-like object taken over Phoenix in July 1947 by amateur astronomer William Albert Rhodes became one of the…
Painted illustration Roswell Incident Foster Ranch, near Corona, New Mexico, United States 1947 evidence Contested In July 1947, debris from an unidentified object was recovered from a ranch near Roswell, New Mexico; the U.S. Army initially announced the capture of a 'flying disc' before retracting the claim, launching the most…
Open the book In July 1947, debris from an unidentified object was recovered from a ranch near Roswell, New Mexico; the U.S. Army initially announced the…
Sighting United Airlines Flight 105 UFO Sighting Over the Pacific Northwest, between Boise, Idaho and Pendleton, Oregon (near Ontario, Oregon), USA 1947 evidence Contested On the evening of 4 July 1947, the crew of a United Airlines DC-3 reported a formation of flat, circular objects over Oregon and Idaho, making it one of the first UFO reports by professional airline pilots.
Open the book On the evening of 4 July 1947, the crew of a United Airlines DC-3 reported a formation of flat, circular objects over Oregon and Idaho,…
Sighting United Flight 147 Mountain Home Sighting Near Mountain Home Army Air Base, Idaho (approaching Boise), USA 1947 evidence Contested On August 18, 1947, the captain and co-pilot of a United Air Lines flight near Boise reported two silver, disc-shaped objects passing about 2,000 feet below their aircraft at an estimated speed near 960 mph, one of…
Open the book On August 18, 1947, the captain and co-pilot of a United Air Lines flight near Boise reported two silver, disc-shaped objects passing about…
Contact Ängelholm UFO Landing Claim Kronoskogen forest, near Ängelholm, Skåne, Sweden 1946 evidence Fringe Railway worker Gösta Carlsson said he saw a disc-shaped craft land in a forest near Ängelholm in May 1946 and met its crew; the claim, first made public in 1971 and memorialised in 1972, rests on his testimony alone.
Open the book Railway worker Gösta Carlsson said he saw a disc-shaped craft land in a forest near Ängelholm in May 1946 and met its crew; the claim,…
Painted illustration Ghost Rockets of Scandinavia Scandinavia (Sweden, Finland, Norway) 1946 evidence Documented Approximately 2,000 sightings of unidentified rocket- or cigar-shaped objects over Sweden, Finland, and Norway between May and December 1946, prompting serious Swedish government investigation and a covert U.S.…
Open the book Approximately 2,000 sightings of unidentified rocket- or cigar-shaped objects over Sweden, Finland, and Norway between May and December…
Painted illustration Operation Highjump Antarctica 1946 evidence Contested A massive 1946–47 U.S. Navy Antarctic expedition led by Admiral Richard Byrd became the center of decades-long UFO conspiracy theories despite official records showing no such encounters.
Open the book A massive 1946–47 U.S. Navy Antarctic expedition led by Admiral Richard Byrd became the center of decades-long UFO conspiracy theories…
