Geocentric model that both Venus and Mercury went around the Sun rather than the Earth, but this is no longer accepted. Martianus Capella definitely put Mercury and Venus in orbit around the Sun. Aristarchus of Samos was the most radical. He wrote a work, which has not survived, on heliocentrism, saying that the Sun was at the center of the universe, while the Earth and other planets revolved around it. His theory was not popular, and he had one named follower, Seleucus of Seleucia. In 1543, the geocentric system met its first serious challenge with the publication of Copernicus' "De revolutionibus orbium
Populated places in Ukraine localities can refer to two different types of inhabited places: villages and rural settlements. Rural populated places in Ukraine are very underdeveloped and often lack basic types of infrastructure: transportation, utilities and others. Village as a term became systematic for a conventional rural populated place and most numerous out of all terms used for populated places in a country. It is administrated by silrada (a rural council) and is the lowest level and most common form of territorial administration at that level. A rural council may be composed of a single village or group of villages. According to the 2001