Ancient astronauts proponents

Henri Lhote (16 March 1903 – 26 March 1991) was a French explorer, ethnographer, and discoverer of prehistoric cave art. He is credited with the discovery of an assembly of 800 or more works of primitive art in a remote region of Algeria on the edge of the Sahara desert.Lhote came to believe the paintings testified to ancient contact with extraterrestrial beings and is considered one of the early proponents of paleocontact.

Serge Hutin (1927 – 1 November 1997) was a French author of books on esoterica and the occult. He was born in France.

Brad Steiger (February 19, 1936 – May 6, 2018) was an American writer of fiction and non-fiction works on the paranormal, spirituality, UFOs, true crime and biographies. His books sold well to the public but were widely criticized by academics and skeptics for making far-fetched claims without scientific evidence.