Caelum Incognitum — The interactive encyclopedia of ufology

Black triangles

Objects & phenomena

Triangular objects, often silent and flanked by three lights, reported mostly since the Belgian wave of 1989-1990. They feed the hypothesis of secret stealth aircraft, though no known machine matches the descriptions exactly. The Phoenix (1997), Belgian and Tinley Park (2004) cases are emblematic.

In the major cases

• The Belgian Wave (1989)
• The Phoenix Lights (1997)
• The Tinley Park Lights (2004)

See also

• Stealth aircraft
• Belgian wave (1989-1990)
• Fife Symington
• Silent flight
• Diamond or lozenge shape
• Boomerang or chevron
• TR-3B
• The Hudson Valley wave (1982-1986)
• V formation

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