It is often contrasted with the better known extraterrestrial hypothesis (ETH), and is particularly popular among UFO researchers in the United Kingdom, such as David Clarke, Hilary Evans, the editors of Magonia magazine, and many of the contributors to Fortean Times magazine.
Riemann hypothesis | Alvarez hypothesis | Witch-cult hypothesis | extraterrestrial hypothesis | two-source hypothesis | Rare Earth hypothesis | Hebrew Gospel hypothesis | Articulata hypothesis | Warburg hypothesis | Two-source hypothesis | Turnover-pulse hypothesis | Three-source hypothesis | Swoon hypothesis | Stolen body hypothesis | Statistical hypothesis testing | Schinzel's hypothesis H | Random walk hypothesis | Generalized Riemann Hypothesis | Four-document hypothesis | Extraterrestrial Hypothesis | Extraterrestrial hypothesis | Erikson's stages of psychosocial development | Efficient-market hypothesis | Dopamine hypothesis of schizophrenia | Documentary Hypothesis | documentary hypothesis | Biophilia hypothesis | Augustinian hypothesis | Apparent-time hypothesis |