File / gorman-1948
The Gorman Dogfight
Twenty-five minutes of manoeuvring against a light over Fargo
Second Lieutenant George Gorman flew an extended series of manoeuvres against a small bright light which, by his account, responded to his movements and out-turned him.
Official position
Blue Book attributed the event to a lighted weather balloon.
Alternative hypotheses
- A lighted weather balloon — a drifting object combined with the observer's own manoeuvres produces the illusion of “response” and “pursuit”.
- The planet Jupiter with misjudged distance.
The classic relative-geometry trap
This is the textbook case for why pilot accounts of “an object that reacted to my manoeuvre” demand particular care.
When a pilot manoeuvres around a distant, stationary or slowly drifting point of light, the aircraft’s own motion transfers onto the target’s apparent motion. The object appears to dive, climb and turn, because the line of sight is changing, not the target’s position.
Without a range measurement these two scenarios cannot be told apart from the cockpit. The same mechanism recurs throughout this database — right up to the GoFast video of 2015.
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