Theodor Landscheidt was one of the more scientific contributors to the field of astrology in the 20th century. He was known, though not necessarily understood, for his occasional journal articles and presentations at astrology conferences, mostly in the 1960’s and 70’s. In later decades he was known as a radical climatologist who operated outside the academic institutions and made bold predictions, many of which were quite accurate. Landscheidt studied philosophy and natural science, earned a doctorate at the University of Gottingen, had a career as West German High Court Judge, and was the director of the Schroeter Institute for Research in Cycles of Solar Activity.
Landscheidt’s astrology connection was complex. He was no doubt influenced by the German schools of Uranian Astrology and Cosmobiology and during the 50’s and 60’s studied and published on topics such as the galactic center and the hypothetical planet Transpluto. His deeper interests, however, concerned an understanding of the entire cosmos as a kind of living cybernetic system, an organic whole that exchanges information and continually adjusts itself. Landscheidt’s cosmobiological conception of nature, with astrological overtones, could be thought of as an extreme extension of Lovelock’s Gaia Hypothesis, with which it was more or less concurrent. In 1973 his small book “Cosmic Cybernetics: The Foundations of a Modern Astrology” was published by Ebertin-Verlag.
Landsheidt’s climatology was based on the idea that solar activity is related to the motions of the Sun around the center of mass (barycenter) of the solar system. In 1989, Landscheidt forecast a period of sunspot minima after 1990, accompanied by increased cold, with a stronger minimum and more intense cold which should peak in 2030  His work on solar cycles has been cited by global warming skeptics  to argue that observed warming is not anthropogenic and will soon be reversed, based on an assumption that fluctuations in climate are controlled by solar activity.
Peer reviewed articles
- Landscheidt, T. 2000. River Po Discharges And Cycles Of Solar Activity - Discussion. Hydrological Sciences Journal-Journal Des Sciences Hydrologiques 45 (3): 491-493.
- Landscheidt, T. 1999. Extrema In Sunspot Cycle Linked To Sun's Motion. Solar Physics 189 (2): 415-426.
- Landscheidt, T. 1988. Solar Rotation, Impulses Of The Torque In The Suns Motion, And Climatic Variation. Climatic Change 12 (3): 265-295.
- Landscheidt, T. 1987. Cyclic Distribution Of Energetic X-Ray Flares. Solar Physics 107 (1): 195-199.
- Landscheidt, T. 1981. Swinging Sun, 79-Year Cycle, And Climatic-Change. Journal of Interdisciplinary Cycle Research 12 (1): 3-19.
- Cosmic cybernetics: The foundations of a modern astrology; Ebertin-Verlag (1973), ASIN: B0006CFNX6
- Sun, Earth, Man: A Mesh of Cosmic Oscillations - How Planets Regulate Solar Eruptions, Geomagnetic Storms, Conditions of Life and Economic Cycles; Urania Trust (Mar 1989), ISBN 1-871989-00-0
- Landscheidt, Theodor (1989). Sun, Earth, Man. Urania Trust. Introduction. ISBN 1-871989-00-0.
- Scofield, Bruce. Theodore Landscheidt Obituary. https://naturalastrology.com/2018/03/29/theodor-landscheidt/
- Landscheidt, T. New Little Ice Age Instead of Global Warming. Energy and Environment 14, 327-350. - 2003 Archived 2014-01-19 at Archive.is; online copy available
- Still Waiting For Greenhouse
- Sorokhtin, O.G. (2007). Global Warming and Global Cooling: Evolution of Climate on Earth. Elsevier Science. p. 169. ISBN 0-444-52815-6.
- Battros, Mitch (2005). Solar Rain. Earth Changes Press. p. 48. ISBN 0-9771348-3-0.
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