Gesellschaft für Erdweltforschung

Gesellschaft für Erdweltforschung (English: Society for Earth Research; called "Society for Geocosmic Research" in English pub.) was a German organisation dedicated to study of the theory of the Hollow Earth. Its members included Helmut K. Schmidt and P.A. Müller-Murnau, both pulp science-fiction authors.

Hypotheses
According to Patrick Moore in The Wandering Astronomer (2000), Schmidt and Müller-Murnau championed a hypothesis that the Earth is a concave sphere, similarly to Cyrus Teed (Koresh), but distinguished by their position that the Earth "extends beneath our feet infinitely in all directions," that the Sun "does not move, or even spin, but the inside of the Earth turns" around it, and the stars are "spots etched on a crystal sphere surrounding the Sun."

Selected Publications

 * (in German) &mdash; [Cosmocentric Laws of Motion]
 * (in German) &mdash; [Why Do We Believe the Cosmocentric Theory to Be Right?]
 * (in English)
 * (in German) &mdash; [The Microcosm]
 * (in German) &mdash; [Heaven and Earth]

Periodicals

 * (in German) &mdash; [Geo-Cosmos - Magazine for the New Worldview]

Resources

 * (in German)
 * (in German) (archive.org) &mdash; Helmut Diehl's website