Geocentric model the coordinate system in order to predict the motions of planetary bodies, though doing so may make calculations easier to perform or interpret. A geocentric coordinate system can be more convenient when dealing only with bodies mostly influenced by the gravity of the Earth (such as artificial satellites and the Moon), or when calculating what the sky will look like when viewed from Earth (as opposed to an imaginary observer looking down on the entire solar system, where a different coordinate system might be more convenient). The Ptolemaic model of the solar system held sway into the early modern age;
Rule of the shorter term rule of the shorter term is such a discrimination, as it results in granting domestic authors longer copyright terms for their works than foreign authors from other EU countries. This issue was settled decisively in 1993 ("i.e.", two years before directive 93/98/EC became effective) by the European Court of Justice (ECJ) in what became known as the "Phil Collins" decision. In that case, Phil Collins sued a German phonogram distributor who was marketing records of a concert Collins had given in the U.S. German law of that time granted German performers full neighbouring rights, and in particular the right to