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
Central High School (Pueblo, Colorado) and an outlying building used as a gym and school meeting area. It was built in 1906. The foyer features right-facing swastikas set into the tile floor. The original Central High School building on Pitkin Avenue (later used as an elementary school) was built of pink rhyolite; the "Stone Schoolhouse" was added to the National Register of Historic Places in 1979. Central first opened in 1883, and in 1886 graduated its first class of nine students. In 1889 Central introduced vocational education into its curriculum, making the district the first west of the Missouri River to introduce what was then