What UFOs turn out to be

Aircraft and helicopters mistaken for UFOs

A plane seen head-on with its landing lights on can look motionless for minutes: it is flying straight towards the observer. At night only its lights show (white, red, green, strobe flashes), which blurs its shape and distance.

Helicopters, which can hover and turn sharply, and low-flying military formations also cause puzzling sightings. Sound, often masked by wind or distance, is the best clue; flight-tracking services can be checked after the fact.

SkyUnknown lists 288 UFO sightings explained as an aircraft (plane, helicopter…), from 1954 to 2025, drawn from official records: GEIPAN (CNES) for 286 cases and Aeronautica Militare (Italie) for 2. The busiest year was 2015, with 34 cases.

Most frequently named places: Cergy (2), Lyon (2), Annecy (2), Bastia (2), and La Saulce (2).