The Belgian UFO Wave: A Winter of Silent Triangles

A clear, freezing night over eastern Belgium, late in November 1989. You are driving home near the town of Eupen when the field beside the road brightens, and above it hangs a slow, enormous triangle: three white lights at its corners, a pulsing red one at its belly, drifting along without any of the sound a machine that size ought to make. Two gendarmes have pulled over ahead of you, out of their car, heads tipped back, watching the same impossible thing you are.

The Belgian UFO wave ran from that November through most of 1990, and it is unusual in the annals of the subject for how ordinary its witnesses were. Thousands of reports came in across Wallonia, concentrated around Eupen, and a striking number came from police officers, professionals with a stake in not looking foolish. The description was remarkably consistent: a large, low, silent craft, usually triangular, carrying bright lights at its points and moving slowly enough that people could watch it for minutes. The Belgian Air Force did something most air forces avoid; it took the reports seriously and cooperated openly with the civilian investigation group SOBEPS.

The night the jets went up

The wave's centerpiece came on the night of the thirtieth into the thirty-first of March 1990. Ground radar operators tracked unidentified returns, and two Belgian F-16 fighters were scrambled to intercept. Over the course of the chase the pilots reported obtaining radar locks on targets that then behaved outrageously, changing speed and altitude at rates no known aircraft could survive, before slipping the lock. The pilots never got a clear visual on whatever the radar was painting. That combination, hard radar data and no eyes on target, is exactly what makes the episode so durable and so contested. Recordings of the pilots' radio traffic and the radar tapes were released and picked over for years afterward, and no analysis has ever fully satisfied both sides at once.

Where the wave frays

The tidy account has real material to work with. Many individual sightings dissolve into helicopters, aircraft on approach, bright planets and stars misjudged in the dark. The single most famous piece of evidence, the Petit-Rechain photograph of a black triangle with glowing corners, circulated for two decades as proof, until in 2011 the man who took it admitted he had faked it with a piece of painted polystyrene and some lights. Later analysis of the March radar returns pointed toward atmospheric and instrument artifacts rather than a solid craft. No single explanation was ever fastened to the whole wave, which is a different thing from saying a craft was proven.

What the debunking does not quite dispose of is the volume and the caliber of the witnesses, sober people, police among them, describing the same silent low triangle across one long winter, and one night on which two fighter pilots and their radar could not turn the thing they were chasing into anything with a name.

Below, readers have filed their own sightings of silent triangles and lights that should not move the way they moved, voting each True, Fake or Not sure. Look over the case and add where you stand.