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Black Triangles

One subset of the UFO phenomenon has broken through to the mainstream. These are the infamous triangular craft. The reports are simply too many and too clear. The sizes of these triangles have ranged from small to immense. Most are slow-moving and low-flying; occasionally people describe them as boomerang-shaped instead of triangular. The fact that they fly so low, and so slowly, is a problem that demands an explanation, both scientifically and politically. Complicating the matter are the many witnesses who describe exceptional speed and maneuverability relating to these triangles, such as flat pivot turns or incredible acceleration. (Richard Dolan)

key articles, documents & resources

NIDS Investigations of the Flying Triangle Enigma

National Institute for Discovery Science (NIDS)

A new report on the current wave of flying/black triangles. Summary: The United States is currently experiencing a wave of Flying Triangle sightings that may have intensified in the 1990s, especially towards the latter part of the 1990s. The wave continues. The Flying Triangles are being openly deployed over and near population centers, including in the vicinity of major Interstate Highways. The behavior of these Triangular aircraft does not conform to previous patterns of covert deployment of unacknowledged aircraft. Neither the agenda nor the origin of the Flying Triangles are currently known.

UFOEvidence.org Case Directory: Triangle Shape

UFO Evidence

Selected cases of triangle-shaped UFOs, including the "large black triangles," as well as other triangular-shaped objects.

other articles & documents

Comparison of Unidentified Triangular or Deltoid Aircraft Location Patterns in Three Independent UFO Databases: NIDS, MUFON and Larry Hatch (PDF) PDF Document

National Institute for Discovery Science (NIDS), 2001

Based on these data from over 500 eyewitnesses (assuming minimal overlap between three databases), we hypothesize that the United States Air Force has been flying large triangular or deltoid shaped aircraft between AFMC or AMC bases.

Do Flying Triangles Have Underwater Bases Around Our Coast?

Omar Fowler

The latest information received indicates that there is intense UFO activity along the East Coast, particularly near Lowestoft and strange things are still happening in the vicinity of Rendlesham Forest! Just what is going on? R

Estimate of the Situation 2000: The Black Triangles

Harv Howard

Mysterious aerial craft commonly called "flying triangles" and/or "black triangles" have been elbowing the classic, disk-shaped UFO aside in the last few years. These angular craft are seen more and more persistently. What are they? Are they a black budget, highly innovative form of craft from the U.S. government/industry, or are they a new form of genuine UFO visiting us? This paper assumes the first possibility is the correct explanation.  R

'Flying Triangle' sightings on the rise

Leonard David, Space.com, September 2, 2004

The National Institute for Discovery Science, or NIDS, has cataloged the Triangle sightings, sifting through and combining databases to take a hard look at the mystery craft.  R

Flying Triangles

The X Factor

Near crashes with passenger planes, high-speed chases with military aircraft... what is the truth behind the most popular type of UFO reported in recent years?  R

Flying Triangles - A Historical Perspective

Nick Redfern and Irene Bott, Alien Encounters magazine

As the majority of people with an interest in UFO mystery will know, in recent years there has been a tremendous increase in the number of triangular and delta-shaped UFOs seen operating in Britain’s airspace.  R

Flying Triangles - Characteristics

UK Ufo Network electronic magazine, Issue 75, June 5th 1997

Characteristics of flying triangles and analysis of their origin. R

Flying Triangles - Why indeed they may be subject to a 'D' Notice (UK)

Omar Fowler, Flying Saucer Review, Autumn 2000

We heard talk last year and rumours that the British media, including the BBC, had received official instructions not to publish any reports about black triangular UFOs, and in due course I received from a long-established FSR reader, Larry Robson, of Stratford-upon- Avon, the following report. As it is useful background information, I am publishing the entire text of it as a prelude to what our Triangle expert Omar Fowler has to say about this matter! R

Flying Triangles Explained?

Brian P James, BUFORA

Those of you who scan the aircraft magazines in newsagents, might have been surprised by the cover of the March issue of Aircraft Illustrated – namely with revelations of a delta-planform aircraft seen flown out of Groom Lake (Area 51) by aviation enthusiasts.  R

Flying Triangles on the Increase

Filer's Files #20 (2000)

UFO reports in the US were low with less than 200 in April compared to 400 last November. However, Flying Triangle reports have increased inferring these may not be of extraterrestrial origin.  R

Hypothesis: The Illinois Flying Triangle is A Department of Defense, Not An ET Craft (PDF) PDF Document

National Institute for Discovery Science (NIDS)

An examination of whether the 2000 Illinois UFO sighting was a secret military craft.

Investigation Casts Light on the Mysterious Flying Black Triangle

Leonard David, Space.com, 05 August 2002

They are big, black, and triangular. In UFO folklore they are proof-positive that planet Earth is a rest stop for joyriding, but road-weary, extraterrestrials. A just released study by the National Institute for Discovery Science (NIDS), based in Las Vegas, Nevada, sheds new light on the dark and mysterious craft. They offer a more down-to-earth hypothesis.  R

Low Flying Triangular Objects: A Safety Hazard (PDF) PDF Document

National Institute for Discovery Science (NIDS)

The purpose of the present paper is to publish a more complete summary of the 127 reports that NIDS has received in the past 14 months on the triangular craft phenomenon. Secondly, we ask the question: does the reported low altitude of these aircraft constitute a safety hazard in the United States?

Possible Electric Propulsion Systems for Flying Triangles

Richard Alexander and Adam Whaley, 1997

Our research into the Flying Triangle "UFO" (which we are becoming convinced is actually a family of such vehicles, and which do not all necessarily use identical propulsion systems or have similar uses) has lead us to believe that the most likely main propulsion system that is employed by craft, similar to that seen in West Wales in November 1996, is of an electrical nature.

Sgt. Clifford Stone's and Triangle Craft in Germany, 1989

Linda M. Howe

Each month I receive several reports from people in the U. S. and other countries who describe seeing unusual objects in the sky they can't identify. For those close enough to see a shape, the description is usually round, oval or cylindrical -- or sometimes diamond, ice-cream cone or boomerang. Then there is another class of aerial vehicles that are very large and silent. Those are the triangles. R

The Amazing Flying Triangle Ships: How they do it

Harv Howard

As the reader, you have the privilege of accepting, rejecting or ignoring all or any part of the following article. Is it sheer speculation, pure poppycock, or something insightful? Even the author cannot truthfully say. R

The Aurora: America's Black Tirangle UFO?

UFO Magazine

An explanation for the UFO known as the "Black Triangle" may have been found. From 1982 to 1985 researchers from the Defense Advanced Research Projects Agency (DARPA) and NASA revived the notion of the Trans-Atmospheric Vehicle (TAV).  R

The Black Triangle Mystery

Clyde Lewis

Since 1990 there have been over 4000 sightings of what is known as the "Flying Triangle" or "Silent Vulcan" Over Britain. In the early 90's there were a similar number over Belgium, France, Holland and Germany, with fighters being sent up to intercept this unknown craft.  R

The Black Triangles

Space 2001

Over the course of the last ten years strange triangular flying craft have excited considerable speculation. Known as "Flying Triangles", or FT's, for short, this enigmatic phenomenon forms part of a global mystery. R

The Flying Triangle Mystery (PDF) PDF Document

Omar Fowler

The first of a two-part report detailing sightings of the mysterious "Flying Triangles", many outside the United States, as authored and complied by Omar Fowler, founder of the Phenomenon Research Association in DerbyShire, United Kingdom. This compilation looks at flying triangle sightings around the world and brings to our attention many sightings which have taken place over England. (File Size 13.8 MB)

Triangular UFO Sightings and Air Force Air Mobility Command Bases

National Institute for Discovery Science (NIDS)

Map of 250 Recently Investigated Reports of Black Triangles.

What Are the Flying Triangles?

James Oberg, special to Space.com, Jan 14, 2000

The December 1999 issue of Spaceflight magazine carried two letters from writers looking for explanations of a curious celestial phenomenon: a triangle of lights crossing the night sky. R

What are the Triangles?

Richard Dolan

One subset of the phenomenon has broken through to the mainstream. Perhaps we should say -- ahem -- the ‘fringes’ of the mainstream. These are the infamous triangular craft. America’s mainstream culture, ever rigid and narrow, yet acknowledges from time to time that such things exist. Frankly, it would be hard not to. The reports are simply too many and too clear.

websites & organizations

Belgium UFO Sightings

UFO Evidence

Among some of the better documented and investigatable cases that have occurred in the last decade is the rash of UFO sightings which took place over Belgium. They represent an example of 'black triangle' UFO sightings.

Flying Triangles & UFO Geometry101 Reports

CAUS (Citizens Against UFO Secrecy)

Collection of selected flying triangle UFO reports.

Illinois UFO Sighting

UFO Evidence

This famous UFO case involved the sighting of a huge unidentified triangular-shaped UFO by police officers and others in the early morning hours of January 5, 2000, over the state of Illinois.

Triangle UFO Sighting Reports - National UFO Reporting Center


A database of over 2500 sightings of triangular UFOs. (large file size)

UFOEvidence.org Case Directory: Triangle Shape

UFO Evidence

Selected cases of triangle-shaped UFOs, including the "large black triangles," as well as other triangular-shaped objects.