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This section contains descriptions of unexplained facts provided by eyewitnesses or published in the media, as well as the results of their analysis by the group.

UFO. Netherlands

ID #1701945933
Added Thu, 07/12/2023
Author July N.

Initial data

Initial information from sources or from an eyewitness
Incident date: 
06.12.2023 21:15

The object flies silently over the city of Arnhem.

The estimated height is 5 km, quite low. It has the same size as the plane in the shape of a triangle. A black object, it's hard to see some faint lights around, I looked at the stars and suddenly saw that it was flying past, the lighting was constant, not blinking. The speed is about 5 times higher than that of the 747. Absolutely silent. Very impressive. 

He went too fast to grab the phone, although it wouldn't have mattered much considering how quickly he was out of sight again.

Original news

Object vliegt geruisloos voorbij

ARNHEM, GD — Geschatte hoogte 5KM, redelijk laag. Het heeft dezelfde groote als een vliegtuig in de vorm van een driekhoek. Zwart object, lastig te zien enkele zwakke lichten rondom, ik keek naar de sterren en zag het ineens voorbij vliegen, de verlichting was constant, niet knipperend. Snelheid ongeveer 5 x zo snel als een 747. Geheel geruisloos. Erg indrukwekkend. Ging te snel om de telefoon te pakken, al had dat weinig uitgemaakt gezien de snelheid dat het weer uit zicht was.


List of versions containing features matching the eyewitness descriptions or material evidence

Airplane / Helicopter

An aircraft heavier than air for flights in the atmosphere (and outer space (e.g. An orbital aircraft)), using the aerodynamic lift of a glider to keep itself in the air (when flying within the atmosphere) and the thrust of a power (propulsion) installation for maneuvering and compensating for the loss of total mechanical energy to drag. 

A rotorcraft in which the lift and thrust required for flight are created by one or more main rotors powered by an engine or several engines. They differ in maneuverability, the ability to hover and almost vertical takeoff.


Versions testing, their confirmation or refutation. Additional information, notes during the study of materials
Not enough information


The most likely explanation. The version, confirmed by the investigation
Not enough information

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