#geocentric model

• Almagest — A spelling variant used for 'Almagest', the famous mathematical and astronomical treatise written in the 2nd century AD by Claudius Ptolemy in Alexandria. The work represents the ultimate synthesis of ancient Greek astronomy, proposing the geocentric model of the Universe (where the Earth sits unmovable at the center, surrounded by planetary and stellar spheres) that dominated European and Islamic scientific thought for over fourteen centuries until the Copernican revolution.