Ptolemy directs here. For other people by that name, see Ptolemy (Disambiguation)
Ptolemy was the author of several scientific treatises. The astronomical treatise now known as the Almagest set forth the concept of the geocentric universe: Earth is the center of the universe, with the Sun, the Moon, and the stars revolving around her.
This model was eventually adopted as doctrine by the Catholic Church.
Ptolemy in "But It Does Move"Edit
Cardinal Sigismondo Gioioso convinced Galileo Galilei that Ptolemy's view was correct as far as the Catholic Church was concerned, but that, even if it weren't, the layman did not notice or appreciate that the Earth moved.