Donald H. Menzel

Donald Howard Menzel (1901-1976) was an American astrophysicist at Harvard University who became the most prominent scientific debunker of UFO sightings in the 1950s and 1960s. He authored three books arguing that UFO sightings could be explained by atmospheric phenomena, mirages, and other natural causes. Despite his public skepticism, some researchers have alleged his involvement in the classified Majestic 12 group, based on controversial documents.