David Clarke

David Clarke is associate professor in the Department of Media Arts and Communications at Sheffield Hallam University, and co-founder of the Centre for Contemporary Legend

Two men stand next to each other holding large guns. They are dressed in black suits and ties with sunglasses and are standing against a blue and black background. Above them, the words "MIB: MEN IN BLACK" are written

Gray Barker: UFO conspiracy theorist

Still from Close Encounters of the Third Kind (1977), directed by Steven Spielberg (Photo by Allstar Picture Library Limited/Alamy Stock Photo)

“Nasa has finally been dragged back into the UFO debate”: David Clarke on the history of flying saucers