Ptolemy`s Almagest was an authoritative text on astronomy for more than a thousand years, and the Tetrabiblos, its companion volume, was equally influential in astrology, the study of the effects of astronomical cycles on earthly matters. But whilst the Almagest as an astronomical authority was superseded by acceptance of the heliocentric model o....
Found on
http://en.wikipedia.org/wiki/Tetrabiblos
(from the article `Ptolemy`) Ptolemy also attempted to place astrology on a sound basis in Apotelesmatika (`Astrological Influences`), later known as the Tetrabiblos for its four ...
Found on
http://www.britannica.com/eb/a-z/t/30
No exact match found.
