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;
Central Congregational Church (Eastport, Maine) Central Congregational Church (Eastport, Maine) The Central Congregational Church is a historic church at 26 Middle Street in Eastport, Maine, USA. The meeting house was built in 1829, and is a remarkably sophisticated example of Federal style architecture for what was then a frontier community. It was listed on the National Register of Historic Places in 1976. The Central Congregational Church of Eastport is set on the west side of Middle Street, midway between Boyton and Key Streets. It is a gable-roofed wood frame structure, with clapboard siding and a stone foundation. Its main facade, facing east is symmetrically organized,