English Almagest Cited by user BobEnyart on 09 Apr 2021 The Almagest is a 2nd-century mathematical and astronomical treatise on the apparent motions of the stars and planetary paths, written by Claudius Ptolemy (c.
English Geocentric model Cited by user Citation bot on 08 Jan 2021 In astronomy, the geocentric model (also known as geocentrism, often exemplified specifically by the Ptolemaic system) is a superseded description of the Universe with…