Abstract
Discriminant analyses were used to determine optimal solar and seismic variables that could correctly classify years in which major luminous events had been reported within Germany, Italy, Austria, France, and Switzerland between the years 1849 and 1926. Expected discriminant scores were generated from these functions for the years 1820 to 1971. Functions that accurately classified more than 90% of the luminosity events between the years 1870 and 1905 also accurately predicted the major UFO flaps between 1945 to 1971 in this area. These analyses support the contention that luminous events reported in the nineteenth century share the same source of variance as modern UFO reports and these phenomena are associated with tectonic strain within the earth.