Conspiracy theorists maintain the weapon was developed in occupied Poland and the technology was later captured by the US.
However, the story has been debunked multiple times as pseudoscientific rumours or an outright hoax.
Brian Dunning, the host of the Skeptoid Podcast, wrote in his book Conspiracies Declassified Die Glocke has “no historical basis at all – outside of esoteric fiction”.
But what about the Lausanne UFO sighting? If the video footage is genuine, it is most likely a case of pareidolia.
Pareidolia is a bizarre effect that causes the brain to see recognisable shapes and patterns where they do not exist.
