The Astronomy Book That Synthesised Three Centuries of Greek Observation and Ruled Europe for Fourteen Centuries
Claudius Ptolemy's *Mathēmatikē Syntaxis* — known to Europe as the *Almagest* through its 9th-century Arabic translation — was the single dominant astronomical reference work of the Western world from approximately 150 AD to 1543. Most of its observational content was inherited from Hipparchus of Rhodes three centuries earlier.
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