Case closed.
Maybe! A few years ago I remember seeing (on a TV show) someone who got film of a bright rhombus-like shaped UFO darting as t astronomical speeds across the sky. They and everyone else was POSITIVE it was proof of a UFO especially when a few months later someone else on the other side of the globe caught footage of the exact same UFO. But ... upon further investigation it was revealed that they were both using the same model camera and were chasing rare light glints in the camera. Usually the simple explanations are the best explanations.
Mystery surrounds 'UFO sighting' in skies above Brean.
There are already a range of theories on what the object might have been, with some believing it was a kite or balloon, while users on video sharing website YouTube claim the object looks like a "high altitude observation balloon payload." Another says it "looks like a metalic shape, higher than a plane, making it pretty big."