Geocentric model coelestium" ("On the Revolutions of the Heavenly Spheres"), which posited that the Earth and the other planets instead revolved around the Sun. The geocentric system was still held for many years afterwards, as at the time the Copernican system did not offer better predictions than the geocentric system, and it posed problems for both natural philosophy and scripture. The Copernican system was no more accurate than Ptolemy's system, because it still used circular orbits. This was not altered until Johannes Kepler postulated that they were elliptical (Kepler's first law of planetary motion). With the invention of the telescope in 1609,
First term of Fernando Chui as Chief Executive of Macau First term of Fernando Chui as Chief Executive of Macau The First term of Fernando Chui Sai On as Chief Executive of Macau, officially considered part of "The 3rd term Chief Executive of Macau", relates to the period of governance of Macau since the transfer of sovereignty of Macau, between 20 December 2009 and 20 December 2014. Fernando Chui Sai On was elected in mid 2009 by 300-member Selection Committee as the second Chief Executive of Macau. The policy bureaux were under several reorganisations during the term as following: The Executive Council was presided by President Fernando Chui Sai On