De revolutionibus orbium coelestium have begun work on his new system by that time. Most historians believe that he wrote the "Commentariolus" after his return from Italy, possibly only after 1510. At this time, Copernicus anticipated that he could reconcile the motion of the Earth with the perceived motions of the planets easily, with fewer motions than were necessary in the "Alfonsine Tables", the version of the Ptolemaic system current at the time. In particular, the heliocentric Copernican model made use of the Urdi Lemma developed in the 13th century by Mu'ayyad al-Din al-'Urdi, the first of the Maragha astronomers to develop a non-Ptolemaic
The Pillars of the Earth Pillars of the Earth" was performed at Østre Gasværk in Copenhagen, Denmark, under the name "Jordens Søjler". Game developer and publisher Daedalic Entertainment announced their intention to develop an adventure game based on "The Pillars of the Earth", to be released in 2017. The game was published on 16 August 2017. The Pillars of the Earth The Pillars of the Earth is a historical novel by Welsh author Ken Follett published in 1989 about the building of a cathedral in the fictional town of Kingsbridge, England. It is set in the middle of the 12th century, primarily during the Anarchy,