Caelum Incognitum — The interactive encyclopedia of ufology
Belgian wave (1989-1990)
Cases, documents & milestones
A series of reports of large, silent triangular objects over Belgium, mainly from November 1989. On the night of 30-31 March 1990, two F-16s were scrambled after radar echoes. The Belgian Air Force released its data, fueling debate on their interpretation. The wave has remained without a consensus explanation.