Description

Video clipping from r/InterdimensionalNHI

During a British Airways commercial in 1976 featuring the Concorde, a fast-moving object appeared while the Concorde was in flight. The object was reportedly seen during the filming of the commercial.
The footage remains one of the few instances where a UFO was captured on professional-grade film. The film footage was analyzed by various experts, including those from the British UFO Research Association (BUFORA) and no definitive explanation was reached.
The Concorde flew at much higher altitudes and speeds than typical commercial aircraft, any object keeping pace or appearing near the Concorde would need to have extraordinary capabilities.